vet vs Dr.

vet and Dr. both are nouns.

Word	Noun	Adjective	Verb	Adverb
vet	Yes	No	Yes	No
Dr.	Yes	No	No	No

As nouns, Dr. is a hypernym of vet; that is, Dr. is a word with a broader meaning than vet:

Other hypernyms of vet include doc, doctor, MD, medico, physician.

vet (noun)	Dr. (noun)
a doctor who practices veterinary medicine	a licensed medical practitioner
a person who has served in the armed forces	a person who holds Ph.D. degree (or the equivalent) from an academic institution

vet (verb)	Dr. (verb)
provide veterinary care for
provide (a person) with medical care
examine carefully
work as a veterinarian