grind vs grinder

grind and grinder both are nouns.

Word	Noun	Adjective	Verb	Adverb
grind	Yes	No	Yes	No
grinder	Yes	No	No	No

grind (noun)	grinder (noun)
the act of grinding to a powder or dust	a machine tool that polishes metal
hard monotonous routine work	machinery that processes materials by grinding or crushing
the grade of particle fineness to which a substance is ground	grinding tooth with a broad crown; located behind the premolars
an insignificant student who is ridiculed as being affected or boringly studious	a large sandwich made of a long crusty roll split lengthwise and filled with meats and cheese (and tomato and onion and lettuce and condiments); different names are used in different sections of the United States

grind (verb)	grinder (verb)
reduce to small pieces or particles by pounding or abrading
make a grating or grinding sound by rubbing together
press or grind with a crushing noise
shape or form by grinding
created by grinding
dance by rotating the pelvis in an erotically suggestive way, often while in contact with one's partner such that the dancers' legs are interlaced
work hard