United States Coast Guard vs US Coast Guard

United States Coast Guard and US Coast Guard both are nouns.

Word	Noun	Adjective	Verb	Adverb
United States Coast Guard	Yes	No	No	No
US Coast Guard	Yes	No	No	No

As nouns, United States Coast Guard and US Coast Guard are synonyms defined as:

United States Coast Guard and US Coast Guard: an agency of the Department of Transportation responsible for patrolling shores and facilitating nautical commerce

Other synonyms of United States Coast Guard include U. S. Coast Guard.

United States Coast Guard (noun)	US Coast Guard (noun)
an agency of the Department of Transportation responsible for patrolling shores and facilitating nautical commerce	an agency of the Department of Transportation responsible for patrolling shores and facilitating nautical commerce