barking deer vs cervid

barking deer and cervid both are nouns.

Word	Noun	Adjective	Verb	Adverb
barking deer	Yes	No	No	No
cervid	Yes	No	No	No

As nouns, cervid is a hypernym of barking deer; that is, cervid is a word with a broader meaning than barking deer:

barking deer: small Asian deer with small antlers and a cry like a bark
cervid: distinguished from Bovidae by the male's having solid deciduous antlers

Other hypernyms of barking deer include deer.

barking deer (noun)	cervid (noun)
small Asian deer with small antlers and a cry like a bark	distinguished from Bovidae by the male's having solid deciduous antlers