diff --git a/src/index.ts b/src/index.ts
index c895f1e..8228f4f 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -1,9 +1,9 @@
-import { ObjectAP } from './models/Object.model';
+import { ASObject } from './models/ASObject.model';
 
-const obj = new ObjectAP({
+const obj = new ASObject({
     id: 'someId',
 });
-const obj2 = new ObjectAP({
+const obj2 = new ASObject({
     cc: '123',
     content: obj,
 }).addContext();
diff --git a/src/models/Base.model.ts b/src/models/ASBase.model.ts
similarity index 91%
rename from src/models/Base.model.ts
rename to src/models/ASBase.model.ts
index 18868a8..a1c7cda 100644
--- a/src/models/Base.model.ts
+++ b/src/models/ASBase.model.ts
@@ -1,11 +1,12 @@
 // TODO: types
+// TODO: renaming/refactor
 export type Context = string | any[];
 
 export interface ModelBaseAPWithContext {
     '@context'?: Context;
 }
 
-export class ModelBaseAP<T> {
+export class ASBase<T> {
     public fields: T & ModelBaseAPWithContext;
 
     constructor(fields: T) {
@@ -27,7 +28,7 @@ export class ModelBaseAP<T> {
     public plain(): Record<string, any> {
         const result = {} as Record<string, any>;
         for (const [key, node] of Object.entries(this.fields)) {
-            if (node instanceof ModelBaseAP) {
+            if (node instanceof ASBase) {
                 result[key] = node.plain();
             } else {
                 result[key] = node;
diff --git a/src/models/ASCollectionBase.model.ts b/src/models/ASCollectionBase.model.ts
new file mode 100644
index 0000000..048746a
--- /dev/null
+++ b/src/models/ASCollectionBase.model.ts
@@ -0,0 +1,16 @@
+import { ASObject, ASObjectFields } from "./ASObject.model";
+
+// TODO: types
+// https://www.w3.org/TR/activitystreams-core/#collection
+export interface ASCollectionBaseFields extends ASObjectFields {
+    totalItems?: any;
+    first?: any;
+    last?: any;
+    current?: any;
+}
+
+export class ASCollectionBase extends ASObject {
+    constructor(fields: ASCollectionBaseFields) {
+        super(fields);
+    }
+}
\ No newline at end of file
diff --git a/src/models/Object.model.ts b/src/models/ASObject.model.ts
similarity index 77%
rename from src/models/Object.model.ts
rename to src/models/ASObject.model.ts
index adb49d0..e90109a 100644
--- a/src/models/Object.model.ts
+++ b/src/models/ASObject.model.ts
@@ -1,8 +1,8 @@
-import {ModelBaseAP} from "./Base.model";
+import {ASBase} from "./ASBase.model";
 
 // TODO: types
 // https://www.w3.org/TR/activitystreams-core/#object
-export interface ObjectAPFields {
+export interface ASObjectFields {
     id?: any;
     type?: any;
     attachment?: any;
@@ -32,8 +32,8 @@ export interface ObjectAPFields {
     duration?: any;
 }
 
-export class ObjectAP extends ModelBaseAP<ObjectAPFields>{
-    constructor(fields: ObjectAPFields) {
+export class ASObject extends ASBase<ASObjectFields>{
+    constructor(fields: ASObjectFields) {
         super(fields);
     }
 }
\ No newline at end of file
diff --git a/src/models/Activity.model.ts b/src/models/Activity.model.ts
index c72c854..dbe93c4 100644
--- a/src/models/Activity.model.ts
+++ b/src/models/Activity.model.ts
@@ -1,14 +1,14 @@
-import {ModelBaseAP} from "./Base.model";
-import {IntransitiveActivityAPFields} from "./IntransitiveActivity.model";
+import {ASBase} from "./ASBase.model";
+import {IntransitiveActivityFields} from "./IntransitiveActivity.model";
 
 // TODO: types
 // https://www.w3.org/TR/activitystreams-core/#activities
-export interface ActivityAPFields extends IntransitiveActivityAPFields {
+export interface ActivityFields extends IntransitiveActivityFields {
     object?: any; // Object?
 }
 
-export class ActivityAP extends ModelBaseAP<ActivityAPFields>{
-    constructor(fields: ActivityAPFields) {
+export class Activity extends ASBase<ActivityFields>{
+    constructor(fields: ActivityFields) {
         super(fields);
     }
 }
\ No newline at end of file
diff --git a/src/models/Actor.model.ts b/src/models/Actor.model.ts
index fb17c61..f1f7cb7 100644
--- a/src/models/Actor.model.ts
+++ b/src/models/Actor.model.ts
@@ -1,5 +1,5 @@
-import {ModelBaseAP} from "./Base.model";
-import {ObjectAPFields} from "./Object.model";
+import {ASBase} from "./ASBase.model";
+import {ASObjectFields} from "./ASObject.model";
 
 export enum ActorTypes {
     Application = 'Application',
@@ -11,17 +11,12 @@ export enum ActorTypes {
 
 // TODO: types
 // https://www.w3.org/TR/activitystreams-core/#actors
-export interface ActorAPFields extends ObjectAPFields {
+export interface ActorFields extends ASObjectFields {
     type?: any | ActorTypes; // ?
-    actor?: any; // Actor?
-    target?: any;
-    origin?: any;
-    result?: any;
-    instrument?: any;
 }
 
-export class ActorAP extends ModelBaseAP<ActorAPFields>{
-    constructor(fields: ActorAPFields) {
+export class Actor extends ASBase<ActorFields>{
+    constructor(fields: ActorFields) {
         super(fields);
     }
 }
\ No newline at end of file
diff --git a/src/models/Collection.model.ts b/src/models/Collection.model.ts
new file mode 100644
index 0000000..62215f0
--- /dev/null
+++ b/src/models/Collection.model.ts
@@ -0,0 +1,13 @@
+import {ASCollectionBase, ASCollectionBaseFields} from "./ASCollectionBase.model";
+
+// TODO: types
+// https://www.w3.org/TR/activitystreams-core/#collection
+export interface CollectionFields extends ASCollectionBaseFields {
+    items?: any; // Objects? Links?
+}
+
+export class Collection extends ASCollectionBase {
+    constructor(fields: CollectionFields) {
+        super(fields);
+    }
+}
\ No newline at end of file
diff --git a/src/models/CollectionPage.model.ts b/src/models/CollectionPage.model.ts
new file mode 100644
index 0000000..9600804
--- /dev/null
+++ b/src/models/CollectionPage.model.ts
@@ -0,0 +1,18 @@
+import {ASCollectionBase, ASCollectionBaseFields} from "./ASCollectionBase.model";
+
+// TODO: types
+// https://www.w3.org/TR/activitystreams-core/#collection
+export interface CollectionPageFields extends ASCollectionBaseFields {
+    partOf?: any;
+    first?: any;
+    next?: any;
+    prev?: any;
+    last?: any;
+    current?: any;
+}
+
+export class CollectionPage extends ASCollectionBase {
+    constructor(fields: CollectionPageFields) {
+        super(fields);
+    }
+}
\ No newline at end of file
diff --git a/src/models/IntransitiveActivity.model.ts b/src/models/IntransitiveActivity.model.ts
index b6a9540..96baf0d 100644
--- a/src/models/IntransitiveActivity.model.ts
+++ b/src/models/IntransitiveActivity.model.ts
@@ -1,9 +1,9 @@
-import {ModelBaseAP} from "./Base.model";
-import {ObjectAPFields} from "./Object.model";
+import {ASBase} from "./ASBase.model";
+import {ASObjectFields} from "./ASObject.model";
 
 // TODO: types
 // https://www.w3.org/TR/activitystreams-core/#intransitiveactivities
-export interface IntransitiveActivityAPFields extends ObjectAPFields {
+export interface IntransitiveActivityFields extends ASObjectFields {
     actor?: any; // Actor?
     target?: any;
     origin?: any;
@@ -11,8 +11,8 @@ export interface IntransitiveActivityAPFields extends ObjectAPFields {
     instrument?: any;
 }
 
-export class IntransitiveActivityAP extends ModelBaseAP<IntransitiveActivityAPFields>{
-    constructor(fields: IntransitiveActivityAPFields) {
+export class IntransitiveActivity extends ASBase<IntransitiveActivityFields>{
+    constructor(fields: IntransitiveActivityFields) {
         super(fields);
     }
 }
\ No newline at end of file
diff --git a/src/models/Link.model.ts b/src/models/Link.model.ts
index 217d64a..fdb1fc0 100644
--- a/src/models/Link.model.ts
+++ b/src/models/Link.model.ts
@@ -1,8 +1,8 @@
-import {ModelBaseAP} from "./Base.model";
+import {ASBase} from "./ASBase.model";
 
 // TODO: types
 // https://www.w3.org/TR/activitystreams-core/#dfn-link
-export interface ObjectAPFields {
+export interface LinkFields {
     id?: any;
     name?: any;
     hreflang?: any;
@@ -12,8 +12,8 @@ export interface ObjectAPFields {
     width?: any;
 }
 
-export class LinkAP extends ModelBaseAP<ObjectAPFields>{
-    constructor(fields: ObjectAPFields) {
+export class Link extends ASBase<LinkFields>{
+    constructor(fields: LinkFields) {
         super(fields);
     }
 }
\ No newline at end of file
diff --git a/src/models/OrderedCollection.model.ts b/src/models/OrderedCollection.model.ts
new file mode 100644
index 0000000..da2b291
--- /dev/null
+++ b/src/models/OrderedCollection.model.ts
@@ -0,0 +1,14 @@
+import {ASCollectionBase, ASCollectionBaseFields} from "./ASCollectionBase.model";
+
+// TODO: types
+// https://www.w3.org/TR/activitystreams-core/#collection
+export interface OrderedCollectionFields extends ASCollectionBaseFields {
+    orderedItems?: any; // Objects? Links?
+}
+
+// TODO: sort method?
+export class OrderedCollection extends ASCollectionBase {
+    constructor(fields: OrderedCollectionFields) {
+        super(fields);
+    }
+}
\ No newline at end of file
diff --git a/src/models/OrderedCollectionPage.model.ts b/src/models/OrderedCollectionPage.model.ts
new file mode 100644
index 0000000..8df62c9
--- /dev/null
+++ b/src/models/OrderedCollectionPage.model.ts
@@ -0,0 +1,14 @@
+import {CollectionPage, CollectionPageFields} from "./CollectionPage.model";
+
+// TODO: types
+// TODO: is it correct?
+// https://www.w3.org/TR/activitystreams-core/#collection
+export interface OrderedCollectionPageFields extends CollectionPageFields {
+    startIndex?: any;
+}
+
+export class OrderedCollectionPage extends CollectionPage {
+    constructor(fields: OrderedCollectionPageFields) {
+        super(fields);
+    }
+}
\ No newline at end of file