veterinarian vs medico

veterinarian and medico both are nouns.

Word	Noun	Adjective	Verb	Adverb
veterinarian	Yes	No	No	No
medico	Yes	No	No	No

As nouns, medico is a hypernym of veterinarian; that is, medico is a word with a broader meaning than veterinarian:

Other hypernyms of veterinarian include doc, doctor, Dr., MD, physician.

veterinarian (noun)	medico (noun)
a doctor who practices veterinary medicine	a licensed medical practitioner
	a student in medical school