people vs group

people and group both are nouns.

Word	Noun	Adjective	Verb	Adverb
people	Yes	No	Yes	No
group	Yes	No	Yes	No

As nouns, group is a hypernym of people; that is, group is a word with a broader meaning than people:

people: (plural) any group of human beings (men or women or children) collectively
group: any number of entities (members) considered as a unit

Other hypernyms of people include grouping.

As nouns, group is a hypernym of people; that is, group is a word with a broader meaning than people:

Other hypernyms of people include grouping.

As nouns, group is a hypernym of people; that is, group is a word with a broader meaning than people:

Other hypernyms of people include grouping.

people (noun)	group (noun)
(plural) any group of human beings (men or women or children) collectively	any number of entities (members) considered as a unit
the body of citizens of a state or country	a set that is closed, associative, has an identity element and every element has an inverse
members of a family line	(chemistry) two or more atoms bound together as a single unit and forming part of a molecule
the common people generally

people (verb)	group (verb)
fill with people	arrange into a group or groups
furnish with people	form a group or group together