dive vs descend

dive is a noun but descend is not a noun.

Word	Noun	Adjective	Verb	Adverb
dive	Yes	No	Yes	No
descend	No	No	Yes	No

As verbs, descend is a hypernym of dive; that is, descend is a word with a broader meaning than dive:

Other hypernyms of dive include come down, fall, go down.

dive (noun)	descend (noun)
a steep nose-down descent by an aircraft
a headlong plunge into water
a cheap disreputable nightclub or dance hall

dive (verb)	descend (verb)
drop steeply	come as if by falling
swim under water	move downward and lower, but not necessarily all the way
plunge into water	do something that one considers to be below one's dignity
	come from; be connected by a relationship of blood, for example