beaver vs genus Castor

beaver and genus Castor both are nouns.

Word	Noun	Adjective	Verb	Adverb
beaver	Yes	No	Yes	No
genus Castor	Yes	No	No	No

beaver (noun)	genus Castor (noun)
large semiaquatic rodent with webbed hind feet and a broad flat tail; construct complex dams and underwater lodges	type genus of the Castoridae: beavers
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 (verb)	genus Castor (verb)
work hard on something