boil down vs come down

boil down and come down both are verbs.

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

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

Other synonyms of boil down include reduce.

boil down (verb)	come down (verb)
cook until very little liquid is left	get sick
be cooked until very little liquid is left	be the essential element
be the essential element	criticize or reprimand harshly
	move downward and lower, but not necessarily all the way
	fall from clouds