clientele vs people

clientele and people both are nouns.

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

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

clientele: customers collectively
people: (plural) any group of human beings (men or women or children) collectively

clientele (noun)	people (noun)
customers collectively	(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

clientele (verb)	people (verb)
	fill with people
	furnish with people