SALT II vs treaty

SALT II and treaty both are nouns.

Word	Noun	Adjective	Verb	Adverb
SALT II	Yes	No	No	No
treaty	Yes	No	No	No

SALT II (noun)	treaty (noun)
the second treaty between the United States and the Union of Soviet Socialist Republics resulting from the Strategic Arms Limitation Talks	a written agreement between two states or sovereigns