sell vs be

sell is a noun but be is not a noun.

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

As verbs, be is a hypernym of sell; that is, be is a word with a broader meaning than sell:

sell: be sold at a certain price or in a certain way
be: have the quality of being; (copula, used with an adjective or a predicate noun)

As verbs, be is a hypernym of sell; that is, be is a word with a broader meaning than sell:

sell: be responsible for the sale of
be: have the quality of being; (copula, used with an adjective or a predicate noun)

As verbs, be is a hypernym of sell; that is, be is a word with a broader meaning than sell:

sell: be approved of or gain acceptance
be: have the quality of being; (copula, used with an adjective or a predicate noun)

sell (noun)	be (noun)
the activity of persuading someone to buy

sell (verb)	be (verb)
persuade somebody to accept something	spend or use time
exchange or deliver for money or its equivalent	work in a specific place, with a specific subject, or in a specific function
do business; offer for sale as for one's livelihood	have an existence, be extant
give up for a price or reward	have life, be alive
deliver to an enemy by treachery	form or compose
be sold at a certain price or in a certain way	have the quality of being; (copula, used with an adjective or a predicate noun)
be responsible for the sale of	occupy a certain position or area; be somewhere
be approved of or gain acceptance	be identical to; be someone or something
	be identical or equivalent to
	represent, as of a character on stage
	be priced at
	to remain unmolested, undisturbed, or uninterrupted -- used only in infinitive form