flowering ash vs Fraxinus dipetala

flowering ash and Fraxinus dipetala both are nouns.

Word	Noun	Adjective	Verb	Adverb
flowering ash	Yes	No	No	No
Fraxinus dipetala	Yes	No	No	No

As nouns, flowering ash and Fraxinus dipetala are synonyms defined as:

flowering ash and Fraxinus dipetala: shrubby California ash with showy off-white flowers

flowering ash (noun)	Fraxinus dipetala (noun)
southern Mediterranean ash having fragrant white flowers in dense panicles and yielding manna	shrubby California ash with showy off-white flowers
shrubby ash of southwestern United States having fragrant white flowers
shrubby California ash with showy off-white flowers