disparagement vs ambusher

disparagement and ambusher both are nouns.

Word	Noun	Adjective	Verb	Adverb
disparagement	Yes	No	No	No
ambusher	Yes	No	No	No

disparagement (noun)	ambusher (noun)
the act of speaking contemptuously of	an attacker who waits in a concealed position to launch a surprise attack
a communication that belittles somebody or something