exogen vs acerola

exogen and acerola both are nouns.

Word	Noun	Adjective	Verb	Adverb
exogen	Yes	No	No	No
acerola	Yes	No	No	No

As nouns, acerola is a hyponym of exogen; that is, acerola is a word with a more specific, narrower meaning than exogen:

exogen: flowering plant with two cotyledons; the stem grows by deposit on its outside
acerola: tropical American shrub bearing edible acid red fruit resembling cherries

exogen (noun)	acerola (noun)
flowering plant with two cotyledons; the stem grows by deposit on its outside	acid red or yellow cherry-like fruit of a tropical American shrub very rich in vitamin C
	tropical American shrub bearing edible acid red fruit resembling cherries