CMS How to change content related words within url?
 

By default, when you click on a item it goes to (depending on friendly URL setting) http://www.mysite.com/content(.php)/1-home
http://www.mysite.com/entries(.php)/2-bajkllkasdjfasdf
http://www.mysite.com/forums(.php)/3-ciobuiawjsdjgh
http://www.mysite.com/threads(.php)/5-wskjshdfjkh
and so on...

Well I'd like to change those words (content, entries, forums, threads, etc...) but after surfing the web and search it along the configuration menu, I couldn't find how to do it.

Can anybody help me?

Thank you so much.