garland crab vs wild apple

garland crab and wild apple both are nouns.

Word	Noun	Adjective	Verb	Adverb
garland crab	Yes	No	No	No
wild apple	Yes	No	No	No

As nouns, wild apple is a hypernym of garland crab; that is, wild apple is a word with a broader meaning than garland crab:

garland crab: medium-sized tree of the eastern United States having pink blossoms and small yellow fruit
wild apple: any of numerous wild apple trees usually with small acidic fruit

Other hypernyms of garland crab include crab apple, crabapple.

garland crab (noun)	wild apple (noun)
medium-sized tree of the eastern United States having pink blossoms and small yellow fruit	any of numerous wild apple trees usually with small acidic fruit