changing code to remove archives wording

My blog is here

I have my nav set up so that some links open into category posts. For instance Irie Life Hacking

When I click that, I want to remove the archives wording. I want to keep the description of the category but either remove the wording “archives-category or just the “archives” wording.

I also need to get the “Leave comments” out of there. I want comments on individual posts, but not in the lists of posts in the archives.

I would also like to have the pages that go to a category – list the pages an image and title or just an image – rather than the title and excerpt. Thank you. So much. Sheila