Md. vs MD

Md. and MD both are nouns.

Word	Noun	Adjective	Verb	Adverb
Md.	Yes	No	No	No
MD	Yes	No	No	No

As nouns, Md. and MD are synonyms defined as:

Md. and MD: a Mid-Atlantic state; one of the original 13 colonies, with capital Annapolis

Other synonyms of Md. include Free State, Maryland, Old Line State.

Md. (noun)	MD (noun)
a Mid-Atlantic state; one of the original 13 colonies, with capital Annapolis	a doctor's degree in medicine
	a Mid-Atlantic state; one of the original 13 colonies, with capital Annapolis
	a licensed medical practitioner