United States Air Force vs USAF

United States Air Force and USAF both are nouns.

Word	Noun	Adjective	Verb	Adverb
United States Air Force	Yes	No	No	No
USAF	Yes	No	No	No

As nouns, United States Air Force and USAF are synonyms defined as:

United States Air Force and USAF: the airforce of the United States of America; the agency that defends the United States through control and exploitation of air and space

Other synonyms of United States Air Force include Air Force, U. S. Air Force, US Air Force.

United States Air Force (noun)	USAF (noun)
the airforce of the United States of America; the agency that defends the United States through control and exploitation of air and space	the airforce of the United States of America; the agency that defends the United States through control and exploitation of air and space