military vs air cover

military and air cover both are nouns.

Word	Noun	Adjective	Verb	Adverb
military	Yes	Yes	No	No
air cover	Yes	No	No	No

military (noun)	air cover (noun)
the military forces of a nation	the use of military aircraft to provide protection against attack by enemy aircraft during ground or naval operations

military (adjective)	air cover (adjective)
associated with or performed by members of the armed services as contrasted with civilians
characteristic of or associated with soldiers or the military
of or relating to the study of the principles of warfare