supply vs purveyance

supply and purveyance both are nouns.

Word	Noun	Adjective	Verb	Adverb
supply	Yes	No	Yes	No
purveyance	Yes	No	No	No

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

supply (noun)	purveyance (noun)
the activity of supplying or providing something	the act of supplying something
offering goods and services for sale
an amount of something available for use

supply (verb)	purveyance (verb)
state or say further
give what is desired or needed, especially support, food or sustenance
give something useful or necessary to
circulate or distribute or equip with