Crataegus tomentosa vs blackthorn

Crataegus tomentosa and blackthorn both are nouns.

Word	Noun	Adjective	Verb	Adverb
Crataegus tomentosa	Yes	No	No	No
blackthorn	Yes	No	No	No

As nouns, Crataegus tomentosa and blackthorn are synonyms defined as:

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

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

Crataegus tomentosa (noun)	blackthorn (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