patron vs surety

patron and surety both are nouns.

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

As nouns, surety is a hyponym of patron; that is, surety is a word with a more specific, narrower meaning than patron:

patron (noun)	surety (noun)
a regular customer	something clearly established
someone who supports or champions something	a guarantee that an obligation will be met
the proprietor of an inn	one who provides a warrant or guarantee to another
	a prisoner who is held by one party to insure that another party will meet specified terms
	property that your creditor can claim in case you default on your obligation