intern vs MD

intern and MD both are nouns.

Word	Noun	Adjective	Verb	Adverb
intern	Yes	No	Yes	No
MD	Yes	No	No	No

As nouns, MD is a hypernym of intern; that is, MD is a word with a broader meaning than intern:

intern: an advanced student or graduate in medicine gaining supervised practical experience
MD: a licensed medical practitioner

Other hypernyms of intern include doc, doctor, Dr., medico, physician.

intern (noun)	MD (noun)
an advanced student or graduate in medicine gaining supervised practical experience	a doctor's degree in medicine
	a Mid-Atlantic state; one of the original 13 colonies, with capital Annapolis
	a licensed medical practitioner

intern (verb)	MD (verb)
deprive of freedom
work as an intern