Steps to reproduce:
1. Navigate the UI
2. Go to Content tree and try to create a Content item, look at list of Content types available.
3. Click "Product category", go back, click "Product Category"

Expected result: My experience is consistent, labels are consistent in terms of meaning and looks, UI screams professionalism

Actual result: I am confused. There are numerous places where labels use the same words and differ in capitalization. Also, there are two different Content Types available, with the same name and the only difference is capitalization.

See screenshots for details.