diff --git a/README.md b/README.md
index cf2397a..90d1652 100644
--- a/README.md
+++ b/README.md
@@ -8,7 +8,7 @@ This dictionary is for [proofdict](https://github.com/proofdict/proofdict).
 
 ## Usage
 
-### Add
+### Add dictionary
 
 If you want to add new rule to your dictionary, you can add new rule by following steps: 
 
@@ -16,7 +16,7 @@ Visit your [editor page](https://proofdict.github.io/proof-dictionary/redirect/?
 
 - <https://proofdict.github.io/proof-dictionary/redirect/?type=editor>
 
-### Update
+### Update dictionary
 
 If you want to update the rule from your dictionary, you can edit it by following steps: 
 
@@ -24,7 +24,7 @@ If you want to update the rule from your dictionary, you can edit it by followin
 2. Select the file for updating
 3. Edit the file by click ![Edit this file](docs/assets/pencil.png) icon
 
-### Remove
+### Remove dictionary
 
 If you want to remove unnecessary rule from your dictionary, you can remove it by following steps: 
 
@@ -32,7 +32,7 @@ If you want to remove unnecessary rule from your dictionary, you can remove it b
 2. Select the file for removing
 3. Remove the file by click ![Delete this file](docs/assets/trashcan.png) icon
 
-### Test
+### Test dictionary
 
 You can check your proof-dictionary is valid format.