humanity vs group

humanity and group both are nouns.

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

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

Other hypernyms of humanity include grouping, homo, human, human being, man.

humanity (noun)	group (noun)
all of the living human inhabitants of the earth	any number of entities (members) considered as a unit
the quality of being humane	a set that is closed, associative, has an identity element and every element has an inverse
the quality of being human	(chemistry) two or more atoms bound together as a single unit and forming part of a molecule

humanity (verb)	group (verb)
	arrange into a group or groups
	form a group or group together