sleet vs come down

sleet is a noun but come down is not a noun.

Word	Noun	Adjective	Verb	Adverb
sleet	Yes	No	Yes	No
come down	No	No	Yes	No

As verbs, come down is a hypernym of sleet; that is, come down is a word with a broader meaning than sleet:

Other hypernyms of sleet include fall, precipitate.

sleet (noun)	come down (noun)
partially melted snow (or a mixture of rain and snow)

sleet (verb)	come down (verb)
precipitate as a mixture of rain and snow	get sick
	be the essential element
	criticize or reprimand harshly
	move downward and lower, but not necessarily all the way
	fall from clouds