boil down vs become

boil down and become both are verbs.

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

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

Other hypernyms of boil down include turn.

boil down (verb)	become (verb)
cook until very little liquid is left	enter or assume a certain state or condition
be cooked until very little liquid is left	come into existence
be the essential element	undergo a change or development
	enhance the appearance of