allergist vs medico

allergist and medico both are nouns.

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

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

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

allergist (noun)	medico (noun)
a physician skilled in the diagnosis and treatment of allergies	a licensed medical practitioner
	a student in medical school