U. S. Coast Guard vs US Coast Guard

U. S. Coast Guard and US Coast Guard both are nouns.

Word	Noun	Adjective	Verb	Adverb
U. S. Coast Guard	Yes	No	No	No
US Coast Guard	Yes	No	No	No

As nouns, U. S. Coast Guard and US Coast Guard are synonyms defined as:

U. S. Coast Guard and US Coast Guard: an agency of the Department of Transportation responsible for patrolling shores and facilitating nautical commerce

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

U. S. 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