sponsor vs patron

sponsor and patron both are nouns.

Word	Noun	Adjective	Verb	Adverb
sponsor	Yes	No	Yes	No
patron	Yes	No	No	No

As nouns, sponsor and patron are synonyms defined as:

Other synonyms of sponsor include supporter.

sponsor (noun)	patron (noun)
someone who supports or champions something	a regular customer
an advocate who presents a person (as for an award or a degree or an introduction etc.)	someone who supports or champions something
	the proprietor of an inn

sponsor (verb)	patron (verb)
assume sponsorship of
assume responsibility for or leadership of
do one's shopping at; do business with; be a customer or client of