First State vs Diamond State

First State and Diamond State both are nouns.

Word	Noun	Adjective	Verb	Adverb
First State	Yes	No	No	No
Diamond State	Yes	No	No	No

As nouns, First State and Diamond State are synonyms defined as:

First State and Diamond State: a Mid-Atlantic state; one of the original 13 colonies, with capital Dover

Other synonyms of First State include DE, Del., Delaware.

First State (noun)	Diamond State (noun)
a Mid-Atlantic state; one of the original 13 colonies, with capital Dover	a Mid-Atlantic state; one of the original 13 colonies, with capital Dover