red haw vs Crataegus mollis

red haw and Crataegus mollis both are nouns.

Word	Noun	Adjective	Verb	Adverb
red haw	Yes	No	No	No
Crataegus mollis	Yes	No	No	No

As nouns, red haw and Crataegus mollis are synonyms defined as:

red haw and Crataegus mollis: American red-fruited hawthorn with stems and leaves densely covered with short woolly hairs

Other synonyms of red haw include Crataegus coccinea mollis, downy haw.

red haw (noun)	Crataegus mollis (noun)
American red-fruited hawthorn with stems and leaves densely covered with short woolly hairs	American red-fruited hawthorn with stems and leaves densely covered with short woolly hairs
American red-fruited hawthorn with dense corymbs of pink-red flowers