endanger vs impact

endanger is not a noun while impact is a noun.

Word	Noun	Adjective	Verb	Adverb
endanger	No	No	Yes	No
impact	Yes	No	Yes	No

As verbs, impact is a hypernym of endanger; that is, impact is a word with a broader meaning than endanger:

Other hypernyms of endanger include affect, bear on, bear upon, touch, touch on.

endanger (noun)	impact (noun)
	influencing strongly
	the violent interaction of individuals or groups entering into combat
	the striking of one body against another
	a forceful consequence; a strong effect

endanger (verb)	impact (verb)
put in a dangerous, disadvantageous, or difficult position	have an effect upon
pose a threat to; present a danger to	press or wedge together; pack together