medical officer vs medic

medical officer and medic both are nouns.

Word	Noun	Adjective	Verb	Adverb
medical officer	Yes	No	No	No
medic	Yes	No	No	No

As nouns, medical officer and medic are synonyms defined as:

medical officer (noun)	medic (noun)
a medical practitioner in the armed forces	a medical practitioner in the armed forces
	any of several Old World herbs of the genus Medicago having small flowers and trifoliate compound leaves