downy ash vs red ash

downy ash and red ash both are nouns.

Word	Noun	Adjective	Verb	Adverb
downy ash	Yes	No	No	No
red ash	Yes	No	No	No

As nouns, downy ash and red ash are synonyms defined as:

downy ash and red ash: smallish American tree with velvety branchlets and lower leaf surfaces

Other synonyms of downy ash include Fraxinus pennsylvanica.

downy ash (noun)	red ash (noun)
smallish American tree with velvety branchlets and lower leaf surfaces	smallish American tree with velvety branchlets and lower leaf surfaces