모두 vs 모든
What is the difference and how should they be used?

Question

Answer

모든 is adjective. 
모두 is noun.

모든 사람들이 그를 좋아한다.
All people like him.
모두 그를 좋아한다.
Everybody likes him.

I hope it will help. thank you !

Answer

모두 is a noun or adverb. 모든 is what is called a pre-noun, so it's kind of like an adjective and needs to have a noun after it. So 우리 모두 = "all of us"; 모든 종류 = "all kinds".