Crowded
Yes. "Crowded" can be a verb (as in "People crowded the stadium") or an adjective. (as in "The stadium was crowded because of all the people.")
Its VERY crowded
The room is crowded.
Yes. Very crowded.
Diffusion
Yes, crowded is the correct spelling.
Is coach too crowded
Crowded Paradise was created in 1956.
Crowded was created on 2006-02-20.
Crowded House was created in 1985.
Crowded House ended in 1996.