What is the difference between a badge, widget and plugin?

[GCD]

I've spent hours trying to add those little icons at the bottom of my blog posts for facebook, twitter , etc Every time I research how to do this, the information sometimes refers to them as badges, widgets or plugins and they all seem to do different things. What are the differences?

[Deaf Mute]

If you are using wordpress you can just search sexybookmarks and it will automatically add the icons to the bottom of blog posts, it also gives you the option of excluding them from RSS feeds as well as hide on mobile devices.

http://wordpress.org/extend/plugins/sexybookmarks/