blackthorn vs Crataegus tomentosa

blackthorn and Crataegus tomentosa both are nouns.

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

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

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

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

blackthorn (noun)	Crataegus tomentosa (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