cloud vs water vapor

cloud and water vapor both are nouns.

Word	Noun	Adjective	Verb	Adverb
cloud	Yes	No	Yes	No
water vapor	Yes	No	No	No

cloud (noun)	water vapor (noun)
a group of many things in the air or on the ground	water in a vaporous form diffused in the atmosphere but below boiling temperature
a visible mass of water or ice particles suspended at a considerable altitude
any collection of particles (e.g., smoke or dust) or gases that is visible
suspicion affecting your reputation
out of touch with reality
a cause of worry or gloom or trouble

cloud (verb)	water vapor (verb)
colour with streaks or blotches of different shades
make milky or dull
make less clear
place under suspicion or cast doubt upon
make gloomy or depressed
billow up in the form of a cloud
make less visible or unclear
make overcast or cloudy