patronage vs clientele

patronage and clientele both are nouns.

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

As nouns, patronage and clientele are synonyms defined as:

Other synonyms of patronage include business.

patronage (noun)	clientele (noun)
the act of providing approval and support	customers collectively
(politics) granting favors or giving contracts or making appointments to office in return for political support
the business given to a commercial establishment by its customers
a communication that indicates lack of respect by patronizing the recipient
customers collectively

patronage (verb)	clientele (verb)
be a regular customer or client of
support by being a patron of