purchase vs repurchase

purchase and repurchase both are nouns.

Word	Noun	Adjective	Verb	Adverb
purchase	Yes	No	Yes	No
repurchase	Yes	No	Yes	No

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

Other hyponyms of purchase include buyback, redemption, buying, purchasing.

As verbs, repurchase is a hyponym of purchase; that is, repurchase is a word with a more specific, narrower meaning than purchase:

purchase (noun)	repurchase (noun)
the acquisition of something for payment	the act of purchasing back something previously sold
the mechanical advantage gained by being in a position to use a lever
a means of exerting influence or gaining advantage
something acquired by purchase

purchase (verb)	repurchase (verb)
obtain by purchase; acquire by means of a financial transaction	buy what had previously been sold, lost, or given away