come down vs descend

come down and descend both are verbs.

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

As verbs, come down and descend are synonyms defined as:

come down and descend: move downward and lower, but not necessarily all the way

Other synonyms of come down include fall, go down.

come down (verb)	descend (verb)
get sick	come as if by falling
be the essential element	move downward and lower, but not necessarily all the way
criticize or reprimand harshly	do something that one considers to be below one's dignity
move downward and lower, but not necessarily all the way	come from; be connected by a relationship of blood, for example
fall from clouds