ambush vs dry-gulching

ambush and dry-gulching both are nouns.

Word	Noun	Adjective	Verb	Adverb
ambush	Yes	No	Yes	No
dry-gulching	Yes	No	No	No

As nouns, dry-gulching is a hyponym of ambush; that is, dry-gulching is a word with a more specific, narrower meaning than ambush:

ambush: the act of concealing yourself and lying in wait to attack by surprise
dry-gulching: the act of killing from ambush

ambush (noun)	dry-gulching (noun)
the act of concealing yourself and lying in wait to attack by surprise	the act of killing from ambush

ambush (verb)	dry-gulching (verb)
wait in hiding to attack
hunt (quarry) by stalking and ambushing