flowering ash vs ash tree

flowering ash and ash tree both are nouns.

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

As nouns, ash tree is a hypernym of flowering ash; that is, ash tree is a word with a broader meaning than flowering ash:

flowering ash: southern Mediterranean ash having fragrant white flowers in dense panicles and yielding manna
ash tree: any of various deciduous pinnate-leaved ornamental or timber trees of the genus Fraxinus

Other hypernyms of flowering ash include ash.

As nouns, ash tree is a hypernym of flowering ash; that is, ash tree is a word with a broader meaning than flowering ash:

flowering ash: shrubby ash of southwestern United States having fragrant white flowers
ash tree: any of various deciduous pinnate-leaved ornamental or timber trees of the genus Fraxinus

Other hypernyms of flowering ash include ash.

As nouns, ash tree is a hypernym of flowering ash; that is, ash tree is a word with a broader meaning than flowering ash:

flowering ash: shrubby California ash with showy off-white flowers
ash tree: any of various deciduous pinnate-leaved ornamental or timber trees of the genus Fraxinus

Other hypernyms of flowering ash include ash.

flowering ash (noun)	ash tree (noun)
southern Mediterranean ash having fragrant white flowers in dense panicles and yielding manna	any of various deciduous pinnate-leaved ornamental or timber trees of the genus Fraxinus
shrubby ash of southwestern United States having fragrant white flowers
shrubby California ash with showy off-white flowers