U.S. government vs judicial branch

U.S. government and judicial branch both are nouns.

Word	Noun	Adjective	Verb	Adverb
U.S. government	Yes	No	No	No
judicial branch	Yes	No	No	No

U.S. government (noun)	judicial branch (noun)
the executive and legislative and judicial branches of the federal government of the United States	the branch of the United States government responsible for the administration of justice