Crowded
The comparative form of "crowded" is "more 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.")
Part of it would be the rotation of the earth, but the biggest reason is Nashville's airport is a lot less crowded than Seattle's so it's quicker to get on the ground once you're in their pattern.
Its VERY crowded
Yes. Very crowded.
The room is crowded.
Diffusion
That is the correct spelling of crowded (congested, cramped).
Is coach too crowded
Crowded Paradise was created in 1956.
Crowded was created on 2006-02-20.