hammer vs middle ear

hammer and middle ear both are nouns.

Word	Noun	Adjective	Verb	Adverb
hammer	Yes	No	Yes	No
middle ear	Yes	No	No	No

hammer (noun)	middle ear (noun)
the act of pounding (delivering repeated heavy blows)	the main cavity of the ear; between the eardrum and the inner ear
a hand tool with a heavy rigid head and a handle; used to deliver an impulsive force by striking
a power tool for drilling rocks
a striker that is covered in felt and that causes the piano strings to vibrate
a light drumstick with a rounded head that is used to strike such percussion instruments as chimes, kettledrums, marimbas, glockenspiels, etc.
the part of a gunlock that strikes the percussion cap when the trigger is pulled
a heavy metal sphere attached to a flexible wire; used in the hammer throw
the ossicle attached to the eardrum

hammer (verb)	middle ear (verb)
beat with or as if with a hammer
create by hammering