grinding vs grind

grinding and grind both are nouns.

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

grinding (noun)	grind (noun)
a harsh and strident sound (as of the grinding of gears)	the act of grinding to a powder or dust
material resulting from the process of grinding	hard monotonous routine work
the wearing down of rock particles by friction due to water or wind or ice	the grade of particle fineness to which a substance is ground
	an insignificant student who is ridiculed as being affected or boringly studious

grinding (verb)	grind (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