Fraxinus Americana vs white ash

Fraxinus Americana and white ash both are nouns.

Word	Noun	Adjective	Verb	Adverb
Fraxinus Americana	Yes	No	No	No
white ash	Yes	No	No	No

As nouns, Fraxinus Americana and white ash are synonyms defined as:

Fraxinus Americana and white ash: spreading American ash with leaves pale green or silvery beneath and having hard brownish wood

Fraxinus Americana (noun)	white ash (noun)
spreading American ash with leaves pale green or silvery beneath and having hard brownish wood	spreading American ash with leaves pale green or silvery beneath and having hard brownish wood
	small to medium-sized tree of Australia and Tasmania having smooth white to light-grey bark shedding in patches or strips