medical specialist vs medico

medical specialist and medico both are nouns.

Word	Noun	Adjective	Verb	Adverb
medical specialist	Yes	No	No	No
medico	Yes	No	No	No

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

Other hypernyms of medical specialist include doc, doctor, Dr., MD, physician.

medical specialist (noun)	medico (noun)
practices one branch of medicine	a licensed medical practitioner
	a student in medical school