citrus fruit vs edible fruit

citrus fruit and edible fruit both are nouns.

Word	Noun	Adjective	Verb	Adverb
citrus fruit	Yes	No	No	No
edible fruit	Yes	No	No	No

As nouns, edible fruit is a hypernym of citrus fruit; that is, edible fruit is a word with a broader meaning than citrus fruit:

citrus fruit: any of numerous fruits of the genus Citrus having thick rind and juicy pulp; grown in warm regions
edible fruit: edible reproductive body of a seed plant especially one having sweet flesh

citrus fruit (noun)	edible fruit (noun)
any of numerous fruits of the genus Citrus having thick rind and juicy pulp; grown in warm regions	edible reproductive body of a seed plant especially one having sweet flesh