ambuscade vs lie in wait

ambuscade is a noun but lie in wait is not a noun.

Word	Noun	Adjective	Verb	Adverb
ambuscade	Yes	No	Yes	No
lie in wait	No	No	Yes	No

As verbs, ambuscade and lie in wait are synonyms defined as:

Other synonyms of ambuscade include ambush, bushwhack, lurk, scupper, waylay.

ambuscade (noun)	lie in wait (noun)
the act of concealing yourself and lying in wait to attack by surprise

ambuscade (verb)	lie in wait (verb)
wait in hiding to attack	wait in hiding to attack