Citrus fruit and Edible fruit

Citrus fruit noun - Any of numerous fruits of the genus Citrus having thick rind and juicy pulp; grown in warm regions.

Edible fruit and citrus fruit are semantically related. In some cases you can use "Edible fruit" instead a noun phrase "Citrus fruit".

Edible fruit noun - Edible reproductive body of a seed plant especially one having sweet flesh.

Citrus fruit and edible fruit are semantically related. Sometimes you can replace phrase "Citrus fruit" with "Edible fruit", this phrases are similar.