piano action vs hammer

piano action and hammer both are nouns.

Word	Noun	Adjective	Verb	Adverb
piano action	Yes	No	No	No
hammer	Yes	No	Yes	No

piano action (noun)	hammer (noun)
action consisting of a system of levers that move a felt hammer to strike the strings when a key is depressed	the act of pounding (delivering repeated heavy blows)
	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

piano action (verb)	hammer (verb)
	beat with or as if with a hammer
	create by hammering