Malus ioensis vs Iowa crab

Malus ioensis and Iowa crab both are nouns.

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

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

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

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

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