buy vs sell

buy and sell both are nouns.

Word	Noun	Adjective	Verb	Adverb
buy	Yes	No	Yes	No
sell	Yes	No	Yes	No

buy (noun)	sell (noun)
an advantageous purchase	the activity of persuading someone to buy

buy (verb)	sell (verb)
accept as true	persuade somebody to accept something
obtain by purchase; acquire by means of a financial transaction	exchange or deliver for money or its equivalent
make illegal payments to in exchange for favors or influence	do business; offer for sale as for one's livelihood
acquire by trade or sacrifice or exchange	give up for a price or reward
be worth or be capable of buying	deliver to an enemy by treachery
	be sold at a certain price or in a certain way
	be responsible for the sale of
	be approved of or gain acceptance