Cervid and Red deer

Cervid noun - Distinguished from Bovidae by the male's having solid deciduous antlers.

Red deer and cervid are semantically related. In some cases you can replace phrase "Red deer" with "Cervid", this terms are similar.

Red deer noun - Common deer of temperate Europe and Asia.

Cervid and red deer are semantically related. You can use "Cervid" instead a noun phrase "Red deer".