Maryland vs Old Line State

Maryland and Old Line State both are nouns.

Word	Noun	Adjective	Verb	Adverb
Maryland	Yes	No	No	No
Old Line State	Yes	No	No	No

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

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

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

Maryland (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
one of the British colonies that formed the United States, with capital Annapolis