grinding vs corpuscle

grinding and corpuscle both are nouns.

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

As nouns, corpuscle is a hypernym of grinding; that is, corpuscle is a word with a broader meaning than grinding:

Other hypernyms of grinding include atom, molecule, mote, particle, speck.

grinding (noun)	corpuscle (noun)
a harsh and strident sound (as of the grinding of gears)	either of two types of cells (erythrocytes and leukocytes) and sometimes including platelets
material resulting from the process of grinding	(nontechnical usage) a tiny piece of anything
the wearing down of rock particles by friction due to water or wind or ice