tumbleweed vs bush

tumbleweed and bush both are nouns.

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

As nouns, bush is a hypernym of tumbleweed; that is, bush is a word with a broader meaning than tumbleweed:

tumbleweed: bushy annual weed of central North America having greenish flowers and winged seeds
bush: a low woody perennial plant usually having several major stems

Other hypernyms of tumbleweed include shrub.

As nouns, bush is a hypernym of tumbleweed; that is, bush is a word with a broader meaning than tumbleweed:

tumbleweed: prickly bushy Eurasian plant; a troublesome weed in central and western United States
bush: a low woody perennial plant usually having several major stems

Other hypernyms of tumbleweed include shrub.

tumbleweed (noun)	bush (noun)
any plant that breaks away from its roots in autumn and is driven by the wind as a light rolling mass	hair growing in the pubic area
bushy annual weed of central North America having greenish flowers and winged seeds	dense vegetation consisting of stunted trees or bushes
bushy plant of western United States	a large wilderness area
prickly bushy Eurasian plant; a troublesome weed in central and western United States	a low woody perennial plant usually having several major stems

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

tumbleweed (verb)	bush (verb)
	provide with a bushing