sear vs burn

sear is not a noun while burn is a noun.

Word	Noun	Adjective	Verb	Adverb
sear	No	Yes	Yes	No
burn	Yes	No	Yes	No

As verbs, burn is a hypernym of sear; that is, burn is a word with a broader meaning than sear:

As verbs, burn is a hypernym of sear; that is, burn is a word with a broader meaning than sear:

Other hypernyms of sear include combust.

sear (noun)	burn (noun)
	damage inflicted by fire
	a place or area that has been burned (especially on a person's body)
	pain that feels hot as if it were on fire
	an injury caused by exposure to heat or chemicals or radiation

sear (adjective)	burn (adjective)
(used especially of vegetation) having lost all moisture

sear (verb)	burn (verb)
make very hot and dry	get a sunburn by overexposure to the sun
burn slightly and superficially so as to affect color	undergo combustion
cause to wither or parch from exposure to heat	cause to undergo combustion
become superficially burned	destroy by fire
	damage by burning with heat, fire, or radiation
	burn, sear, or freeze (tissue) using a hot iron or electric current or a caustic agent
	use up (energy)
	create by duplicating data
	feel strong emotion, especially anger or passion
	cause a sharp or stinging pain or discomfort
	feel hot or painful
	spend (significant amounts of money)
	execute by tying to a stake and setting alight
	shine intensely, as if with heat
	cause to burn or combust