unheeding vs careless

unheeding and careless both are adjectives.

Word	Noun	Adjective	Verb	Adverb
unheeding	No	Yes	No	No
careless	No	Yes	No	No

unheeding (adjective)	careless (adjective)
marked by or paying little heed or attention	marked by lack of attention or consideration or forethought or thoroughness; not careful
	effortless and unstudied
	(usually followed by `of') without due thought or consideration