blackthorn vs pear haw

blackthorn and pear haw both are nouns.

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

As nouns, blackthorn and pear haw are synonyms defined as:

blackthorn and pear haw: erect and almost thornless American hawthorn with somewhat pear-shaped berries

Other synonyms of blackthorn include Crataegus calpodendron, Crataegus tomentosa, pear hawthorn.

blackthorn (noun)	pear haw (noun)
erect and almost thornless American hawthorn with somewhat pear-shaped berries	erect and almost thornless American hawthorn with somewhat pear-shaped berries
a thorny Eurasian bush with plumlike fruits