What is the difference between keywords and meta tags? Also, can I list the same keywords and metatags on all my website pages?

commented: waste of space -7

Keywords are descriptive words or phrases that are separated by commas and attached to the web pages. While, descriptive words and phrases attached to the web pages, invisible to the visitors are known as Meta tags and consist of Description, Keywords and Title.

Salem, i am not add any sig under my post yet and even if i add, it will be the same one
so , i am clear of spammy or not?
expect for your reply

Ya, the thread is look same as in other forum just copy paste here. I think this should not be the right idea.