blackthorn vs haw

blackthorn and haw both are nouns.

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

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

blackthorn: erect and almost thornless American hawthorn with somewhat pear-shaped berries
haw: a spring-flowering shrub or small tree of the genus Crataegus

Other hypernyms of blackthorn include hawthorn.

blackthorn (noun)	haw (noun)
erect and almost thornless American hawthorn with somewhat pear-shaped berries	the nictitating membrane of a horse
a thorny Eurasian bush with plumlike fruits	a spring-flowering shrub or small tree of the genus Crataegus

blackthorn (verb)	haw (verb)
	utter `haw'