crabapple vs apple tree

crabapple and apple tree both are nouns.

Word	Noun	Adjective	Verb	Adverb
crabapple	Yes	No	No	No
apple tree	Yes	No	No	No

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

crabapple: any of numerous wild apple trees usually with small acidic fruit
apple tree: any tree of the genus Malus especially those bearing firm rounded edible fruits

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

crabapple: any of numerous varieties of crab apples cultivated for their small acidic (usually bright red) fruit used for preserves or as ornamentals for their blossoms
apple tree: any tree of the genus Malus especially those bearing firm rounded edible fruits

crabapple (noun)	apple tree (noun)
small sour apple; suitable for preserving	any tree of the genus Malus especially those bearing firm rounded edible fruits
any of numerous wild apple trees usually with small acidic fruit
any of numerous varieties of crab apples cultivated for their small acidic (usually bright red) fruit used for preserves or as ornamentals for their blossoms