unfreeze vs freeze

unfreeze is not a noun while freeze is a noun.

Word	Noun	Adjective	Verb	Adverb
unfreeze	No	No	Yes	No
freeze	Yes	No	Yes	No

unfreeze (noun)	freeze (noun)
	an interruption or temporary suspension of progress or movement
	fixing (of prices or wages etc) at a particular level
	weather cold enough to cause freezing
	the withdrawal of heat to change something from a liquid to a solid

unfreeze (verb)	freeze (verb)
become or cause to become soft or liquid	be cold
make (assets) available	anesthetize by cold
	suddenly behave coldly and formally
	change to ice
	stop a process or a habit by imposing a freeze on it
	cause to freeze
	prohibit the conversion or use of (assets)
	change from a liquid to a solid when cold
	stop moving or become immobilized
	be very cold, below the freezing point