beaver fur vs beaver

beaver fur and beaver both are nouns.

Word	Noun	Adjective	Verb	Adverb
beaver fur	Yes	No	No	No
beaver	Yes	No	Yes	No

As nouns, beaver fur and beaver are synonyms defined as:

beaver fur (noun)	beaver (noun)
the soft brown fur of the beaver	large semiaquatic rodent with webbed hind feet and a broad flat tail; construct complex dams and underwater lodges
	a hat made with the fur of a beaver (or similar material)
	a movable piece of armor on a medieval helmet used to protect the lower face
	a man's hat with a tall crown; usually covered with silk or with beaver fur
	a full beard
	the soft brown fur of the beaver

beaver fur (verb)	beaver (verb)
	work hard on something