be vs pass

be is not a noun while pass is a noun.

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

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

be: occupy a certain position or area; be somewhere
pass: stretch out over a distance, space, time, or scope; run or extend between two points or beyond a certain point

be (noun)	pass (noun)
	(sports) the act of throwing the ball to another member of your team
	a usually brief attempt
	(American football) a play that involves one player throwing the ball to a teammate
	(baseball) an advance to first base by a batter who receives four balls
	success in satisfying a test or requirement
	a flight or run by an aircraft over a target
	a permit to enter or leave a military installation
	any authorization to pass or go somewhere
	an automatic advance to the next round in a tournament without playing an opponent
	a document indicating permission to do something without restrictions
	a complimentary ticket
	a difficult juncture
	one complete cycle of operations (as by a computer)
	the location in a range of mountains of a geological formation that is lower than the surrounding peaks
	a bad or difficult situation or state of affairs
	(military) a written leave of absence

be (adjective)	pass (adjective)
	of advancing the ball by throwing it

be (verb)	pass (verb)
spend or use time	eliminate from the body
work in a specific place, with a specific subject, or in a specific function	come to pass
have an existence, be extant	disappear gradually
have life, be alive	pass from physical life and lose all bodily attributes and functions necessary to sustain life
form or compose	grant authorization or clearance for
have the quality of being; (copula, used with an adjective or a predicate noun)	transmit information
occupy a certain position or area; be somewhere	pass over, across, or through
be identical to; be someone or something	go across or through
be identical or equivalent to	travel past
represent, as of a character on stage	pass into a specified state or condition; sink into
be priced at	for time to move forward
to remain unmolested, undisturbed, or uninterrupted -- used only in infinitive form	cause to pass
	move past
	place into the hands or custody of
	throw (a ball) to another player
	transfer to another; of rights or property
	be inherited by
	make laws, bills, etc. or bring into effect by legislation
	go unchallenged; be approved
	accept or judge as acceptable
	go successfully through a test or a selection process
	allow to go without comment or censure
	use up a period of time in a specific way
	be superior or better than some standard
	stretch out over a distance, space, time, or scope; run or extend between two points or beyond a certain point