Md. vs Old Line State

Md. and Old Line State both are nouns.

Word	Noun	Adjective	Verb	Adverb
Md.	Yes	No	No	No
Old Line State	Yes	No	No	No

As nouns, Md. and Old Line State are synonyms defined as:

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

Other synonyms of Md. include Free State, Maryland, MD.

Md. (noun)	Old Line State (noun)
a Mid-Atlantic state; one of the original 13 colonies, with capital Annapolis	a Mid-Atlantic state; one of the original 13 colonies, with capital Annapolis