injure vs sting

injure is not a noun while sting is a noun.

Word	Noun	Adjective	Verb	Adverb
injure	No	No	Yes	No
sting	Yes	No	Yes	No

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

Other hyponyms of injure include affront, diss, insult, lacerate, abase, chagrin, humble, humiliate, mortify.

injure (noun)	sting (noun)
	a swindle in which you cheat at gambling or persuade a person to buy worthless property
	operation designed to catch a person committing a criminal act
	a kind of pain; something as sudden and painful as being stung
	a painful wound caused by the thrust of an insect's stinger into skin
	a mental pain or distress

injure (verb)	sting (verb)
cause injuries or bodily harm to	saddle with something disagreeable or disadvantageous
cause damage or affect negatively	deliver a sting to
hurt the feelings of	cause an emotional pain, as if by stinging
	cause a stinging pain
	cause a sharp or stinging pain or discomfort