GP vs medico

GP and medico both are nouns.

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

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

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

GP (noun)	medico (noun)
a physician who is not a specialist but treats all illnesses	a licensed medical practitioner
	a student in medical school