endanger vs queer

endanger is not a noun while queer is a noun.

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

As verbs, endanger and queer are synonyms defined as:

endanger and queer: put in a dangerous, disadvantageous, or difficult position

Other synonyms of endanger include expose, peril, scupper.

endanger (noun)	queer (noun)
	offensive term for a homosexual man

endanger (adjective)	queer (adjective)
	homosexual or arousing homosexual desires
	beyond or deviating from the usual or expected

endanger (verb)	queer (verb)
put in a dangerous, disadvantageous, or difficult position	put in a dangerous, disadvantageous, or difficult position
pose a threat to; present a danger to	hinder or prevent (the efforts, plans, or desires) of