flowering ash vs manna ash

flowering ash and manna ash both are nouns.

Word	Noun	Adjective	Verb	Adverb
flowering ash	Yes	No	No	No
manna ash	Yes	No	No	No

As nouns, flowering ash and manna ash are synonyms defined as:

flowering ash and manna ash: southern Mediterranean ash having fragrant white flowers in dense panicles and yielding manna

Other synonyms of flowering ash include Fraxinus ornus.

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