Malus ioensis vs Iowa crab apple

Malus ioensis and Iowa crab apple both are nouns.

Word	Noun	Adjective	Verb	Adverb
Malus ioensis	Yes	No	No	No
Iowa crab apple	Yes	No	No	No

As nouns, Malus ioensis and Iowa crab apple are synonyms defined as:

Malus ioensis and Iowa crab apple: wild crab apple of western United States with fragrant pink flowers

Other synonyms of Malus ioensis include Iowa crab, prairie crab, western crab apple.

Malus ioensis (noun)	Iowa crab apple (noun)
wild crab apple of western United States with fragrant pink flowers	wild crab apple of western United States with fragrant pink flowers