hammer vs hammerhead

hammer and hammerhead both are nouns.

Word	Noun	Adjective	Verb	Adverb
hammer	Yes	No	Yes	No
hammerhead	Yes	No	No	No

hammer (noun)	hammerhead (noun)
the act of pounding (delivering repeated heavy blows)	medium-sized live-bearing shark with eyes at either end of a flattened hammer-shaped head; worldwide in warm waters; can be dangerous
a hand tool with a heavy rigid head and a handle; used to deliver an impulsive force by striking	the striking part of a hammer
a power tool for drilling rocks	a stupid person; these words are used to express a low opinion of someone's intelligence
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)	hammerhead (verb)
beat with or as if with a hammer
create by hammering