pass vs free

pass and free both are nouns.

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

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

pass (noun)	free (noun)
(sports) the act of throwing the ball to another member of your team	people who are free
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

pass (adjective)	free (adjective)
of advancing the ball by throwing it	not limited or hampered; not under compulsion or restraint
	not held in servitude
	unconstrained or not chemically bound in a molecule or not fixed and capable of relatively unrestricted motion
	not literal
	completely wanting or lacking
	not fixed in position
	costing nothing
	not taken up by scheduled activities
	not occupied or in use

pass (verb)	free (verb)
eliminate from the body	make (assets) available
come to pass	let off the hook
disappear gradually	free or remove obstruction from
pass from physical life and lose all bodily attributes and functions necessary to sustain life	remove or force out from a position
grant authorization or clearance for	release (gas or energy) as a result of a chemical reaction or physical decomposition
transmit information	part with a possession or right
pass over, across, or through	relieve from
go across or through	grant freedom to; free from confinement
travel past	make (information) available for publication
pass into a specified state or condition; sink into	free from obligations or duties
for time to move forward	grant relief or an exemption from a rule or requirement to
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

pass (adverb)	free (adverb)
	without restraint