diff --git a/ExpressionsLoader.playground/Sources/ExpressionType.swift b/ExpressionsLoader.playground/Sources/ExpressionRepresentationType.swift
similarity index 74%
rename from ExpressionsLoader.playground/Sources/ExpressionType.swift
rename to ExpressionsLoader.playground/Sources/ExpressionRepresentationType.swift
index cb07383..1703518 100644
--- a/ExpressionsLoader.playground/Sources/ExpressionType.swift
+++ b/ExpressionsLoader.playground/Sources/ExpressionRepresentationType.swift
@@ -3,7 +3,7 @@ import Foundation
 /**
 Represents expressions in the framework.
 */
-public protocol ExpressionType {
+public protocol ExpressionRepresentationType {
     /// Identifier of expression.
     var identifier: String {get}
 }
diff --git a/ExpressionsLoader.playground/Sources/ProcessableExpression.swift b/ExpressionsLoader.playground/Sources/ProcessableExpression.swift
index 8f74695..a0c0bac 100644
--- a/ExpressionsLoader.playground/Sources/ProcessableExpression.swift
+++ b/ExpressionsLoader.playground/Sources/ProcessableExpression.swift
@@ -3,7 +3,7 @@ import Foundation
 /** 
 Represents loaded expression that will be processed later.
 */
-public struct ProcessableExpression: ExpressionType, ExpressionPatternType, Processable {
+public struct ProcessableExpression: ExpressionRepresentationType, ExpressionPatternType, Processable {
     /// Identifier of expression.
     public let identifier: String
     
diff --git a/ExpressionsLoader.playground/Sources/ProcessableLengthVariationExpression.swift b/ExpressionsLoader.playground/Sources/ProcessableLengthVariationExpression.swift
index fb61dfe..77c84f5 100644
--- a/ExpressionsLoader.playground/Sources/ProcessableLengthVariationExpression.swift
+++ b/ExpressionsLoader.playground/Sources/ProcessableLengthVariationExpression.swift
@@ -3,7 +3,7 @@ import Foundation
 /**
 Represents processable expression with length variations.
 */
-public struct ProcessableLengthVariationExpression: ExpressionType, Processable {
+public struct ProcessableLengthVariationExpression: ExpressionRepresentationType, Processable {
     /// Identifier of expression.
     public var identifier: String
     
diff --git a/ExpressionsLoader.playground/playground.xcworkspace/xcuserdata/tomkowz.xcuserdatad/UserInterfaceState.xcuserstate b/ExpressionsLoader.playground/playground.xcworkspace/xcuserdata/tomkowz.xcuserdatad/UserInterfaceState.xcuserstate
index 58a5917..f98a0d1 100644
Binary files a/ExpressionsLoader.playground/playground.xcworkspace/xcuserdata/tomkowz.xcuserdatad/UserInterfaceState.xcuserstate and b/ExpressionsLoader.playground/playground.xcworkspace/xcuserdata/tomkowz.xcuserdatad/UserInterfaceState.xcuserstate differ