mad apple vs mad apple

mad apple and mad apple both are nouns.

Word	Noun	Adjective	Verb	Adverb
mad apple	Yes	No	No	No
mad apple	Yes	No	No	No

mad apple (noun)	mad apple (noun)
egg-shaped vegetable having a shiny skin typically dark purple but occasionally white or yellow	egg-shaped vegetable having a shiny skin typically dark purple but occasionally white or yellow
hairy upright herb native to southeastern Asia but widely cultivated for its large glossy edible fruit commonly used as a vegetable	hairy upright herb native to southeastern Asia but widely cultivated for its large glossy edible fruit commonly used as a vegetable