Battle of Britain vs battle

Battle of Britain and battle both are nouns.

Word	Noun	Adjective	Verb	Adverb
Battle of Britain	Yes	No	No	No
battle	Yes	No	Yes	No

Battle of Britain (noun)	battle (noun)
the prolonged bombardment of British cities by the German Luftwaffe during World War II and the aerial combat that accompanied it	a hostile meeting of opposing military forces in the course of a war
	an energetic attempt to achieve something
	an open clash between two opposing groups (or individuals)

Battle of Britain (verb)	battle (verb)
	battle or contend against in or as if in a battle