blackthorn vs bush

blackthorn and bush both are nouns.

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

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

Other hypernyms of blackthorn include shrub.

blackthorn (noun)	bush (noun)
erect and almost thornless American hawthorn with somewhat pear-shaped berries	hair growing in the pubic area
a thorny Eurasian bush with plumlike fruits	dense vegetation consisting of stunted trees or bushes
	a large wilderness area
	a low woody perennial plant usually having several major stems

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

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