rock vs rocker

rock and rocker both are nouns.

Word	Noun	Adjective	Verb	Adverb
rock	Yes	No	Yes	No
rocker	Yes	No	No	No

rock (noun)	rocker (noun)
pitching dangerously to one side	a curved support that permits the supported object to rock to and fro
a genre of popular music originating in the 1950s; a blend of black rhythm-and-blues with white country-and-western	a chair mounted on rockers
hard bright-colored stick candy (typically flavored with peppermint)	an ice skate with a curved blade
a lump or mass of hard consolidated mineral matter	a trough that can be rocked back and forth; used by gold miners to shake auriferous earth in water in order to separate the gold
(figurative) someone who is strong and stable and dependable	a teenager or young adult in the 1960s who wore leather jackets and rode motorcycles
material consisting of the aggregate of minerals like those making up the Earth's crust	a performer or composer or fan of rock music
	an attendant who rocks a child in a cradle

rock (verb)	rocker (verb)
move back and forth or sideways
cause to move back and forth