diff --git a/README.md b/README.md
index 942e6ba..4158e0f 100644
--- a/README.md
+++ b/README.md
@@ -11,12 +11,12 @@ An unofficial CharaChorder One practice tool
 
 - Layout Lesson
   - 3~4 keys in a small lesson
-  - numbers and letters
+  - lessons for numbers, letters, and symbol
 - Device Layout View
   - only show the labels of keys in the current lesson
   - highlight the current key(s) required to type out the character
 - Widgets
-  - combo counter that counts the number of consecutive correct keystokes
+  - combo counter that counts the number of consecutive correct input
   - speedometer that shows the current typing speed
 
 ## Disclaimer