Alright so I was wondering about the Dragon Shout Trophy, Do I only need the 20 different shouts or do they need to have all the words to that shout too?

Just 20 different shouts. The words of each do not matter.

You need to complete the main quest to get the "last" one.

Hope this helps.

I completed the main quest but got stuck with 19 shouts. But then again I still needed to learn 17 more words, so maybe thats why I haven't learned the last one yet.

Quite so. Three of those unlearned words are an entire shout you're missing.

I'm sure the wiki can help you.

Good luck!

Well I am on the PS3 version so I am focusing on Main Quest now that I completed Civil War and Companions for this Character. Just with the problems the PS3 is having I am just focusing on collecting the Trophies than I will be forced to put the game down since I cant truly play the way the game is meant to be played until more patches are released.

Thanks for the help, its all I needed to know to map out where I was going to be going after I completed the main quest, assuming I wont run into any of the problems I keep hearing about lol.

I thought so. But first I look for it myself, wondering in the world looking for words, is quite fun. If the game won't crash or freezes that is.

Indeed, usually there is an awesome boss fight with every word.