bushwhack vs scupper

bushwhack is not a noun while scupper is a noun.

Word	Noun	Adjective	Verb	Adverb
bushwhack	No	No	Yes	No
scupper	Yes	No	Yes	No

As verbs, bushwhack and scupper are synonyms defined as:

Other synonyms of bushwhack include ambuscade, ambush, lie in wait, lurk, waylay.

bushwhack (noun)	scupper (noun)
	drain that allows water on the deck of a vessel to flow overboard

bushwhack (verb)	scupper (verb)
wait in hiding to attack	put in a dangerous, disadvantageous, or difficult position
cut one's way through the woods or bush	wait in hiding to attack
live in the bush as a fugitive or as a guerilla