imperial beard vs imperial

imperial beard and imperial both are nouns.

Word	Noun	Adjective	Verb	Adverb
imperial beard	Yes	No	No	No
imperial	Yes	Yes	No	No

As nouns, imperial beard and imperial are synonyms defined as:

imperial beard and imperial: a small tufted beard worn by Emperor Napoleon III

imperial beard (noun)	imperial (noun)
a small tufted beard worn by Emperor Napoleon III	a piece of luggage carried on top of a coach
	a small tufted beard worn by Emperor Napoleon III

imperial beard (adjective)	imperial (adjective)
	befitting or belonging to an emperor or empress
	relating to or associated with an empire
	of or belonging to the British Imperial System of weights and measures
	belonging to or befitting a supreme ruler