diff --git a/README.md b/README.md
index 24e12a1a..bd5cba40 100644
--- a/README.md
+++ b/README.md
@@ -8,7 +8,7 @@
 
 At first it seemed alright. A little business logic in a controller
 or model wasn't going to hurt anything. Then one day you wake up
-and you're surrounded by fat models and unweildy controllers. Curled
+and you're surrounded by fat models and unwieldy controllers. Curled
 up and crying in the corner, you can't help but wonder how it came
 to this.
 
diff --git a/lib/active_interaction/base.rb b/lib/active_interaction/base.rb
index b912e62e..9e2f2dd3 100644
--- a/lib/active_interaction/base.rb
+++ b/lib/active_interaction/base.rb
@@ -65,7 +65,7 @@ def initialize(options = {})
       end
     end
 
-    # Runs the business logic associated with the interactor. The method is only
+    # Runs the business logic associated with the interaction. The method is only
     #   run when there are no validation errors. The return value is placed into
     #   {#result}. This method must be overridden in the subclass.
     #
diff --git a/spec/active_interaction/filters/model_filter_spec.rb b/spec/active_interaction/filters/model_filter_spec.rb
index 57a0df0b..1573022d 100644
--- a/spec/active_interaction/filters/model_filter_spec.rb
+++ b/spec/active_interaction/filters/model_filter_spec.rb
@@ -9,7 +9,7 @@
   before { options.merge!(class: TestModel) }
 
   describe '.prepare(key, value, options = {}, &block)' do
-    shared_examples 'typechecking' do
+    shared_examples 'type checking' do
       context 'with the right class' do
         let(:value) { TestModel.new }
 
@@ -20,11 +20,11 @@
     end
 
     context 'with options[:class] as a Class' do
-      include_examples 'typechecking'
+      include_examples 'type checking'
     end
 
     context 'with options[:class] as a valid String' do
-      include_examples 'typechecking'
+      include_examples 'type checking'
 
       before { options.merge!(class: options[:class].to_s) }
     end
diff --git a/spec/active_interaction/integration/model_interaction_spec.rb b/spec/active_interaction/integration/model_interaction_spec.rb
index 7618ad56..b7f20702 100644
--- a/spec/active_interaction/integration/model_interaction_spec.rb
+++ b/spec/active_interaction/integration/model_interaction_spec.rb
@@ -1,5 +1,5 @@
 require 'spec_helper'
 
-describe 'ModelInteraciton' do
+describe 'ModelInteraction' do
   it_behaves_like 'an interaction', :model, -> { Proc.new {} }, class: Proc
 end