Citrus fruits and Citrus fruit

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

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

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