slump vs descend

slump is a noun but descend is not a noun.

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

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

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

slump (noun)	descend (noun)
a noticeable deterioration in performance or quality
a long-term economic state characterized by unemployment and low prices and low levels of trade and investment

slump (verb)	descend (verb)
fall heavily or suddenly; decline markedly	come as if by falling
fall or sink heavily	move downward and lower, but not necessarily all the way
assume a drooping posture or carriage	do something that one considers to be below one's dignity
fall in value	come from; be connected by a relationship of blood, for example