hoi polloi vs grouping

hoi polloi and grouping both are nouns.

Word	Noun	Adjective	Verb	Adverb
hoi polloi	Yes	No	No	No
grouping	Yes	No	No	No

As nouns, grouping is a hypernym of hoi polloi; that is, grouping is a word with a broader meaning than hoi polloi:

Other hypernyms of hoi polloi include group.

hoi polloi (noun)	grouping (noun)
the common people generally	any number of entities (members) considered as a unit
	the activity of putting things together in groups
	a system for classifying things into groups