bush vs furnish

bush is a noun but furnish is not a noun.

Word	Noun	Adjective	Verb	Adverb
bush	Yes	Yes	Yes	No
furnish	No	No	Yes	No

As verbs, furnish is a hypernym of bush; that is, furnish is a word with a broader meaning than bush:

Other hypernyms of bush include offer, provide, render, supply.

bush (noun)	furnish (noun)
hair growing in the pubic area
dense vegetation consisting of stunted trees or bushes
a large wilderness area
a low woody perennial plant usually having several major stems

bush (adjective)	furnish (adjective)
not of the highest quality or sophistication

bush (verb)	furnish (verb)
provide with a bushing	give something useful or necessary to
	provide or equip with furniture