business people vs people

business people and people both are nouns.

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

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

business people: people who transact business (especially business executives)
people: (plural) any group of human beings (men or women or children) collectively

business people (noun)	people (noun)
people who transact business (especially business executives)	(plural) any group of human beings (men or women or children) collectively
	the body of citizens of a state or country
	members of a family line
	the common people generally

business people (verb)	people (verb)
	fill with people
	furnish with people