scrunch vs hunker down

scrunch is a noun but hunker down is not a noun.

Word	Noun	Adjective	Verb	Adverb
scrunch	Yes	No	Yes	No
hunker down	No	No	Yes	No

As verbs, scrunch and hunker down are synonyms defined as:

Other synonyms of scrunch include crouch, hunker, scrunch up, squat.

scrunch (noun)	hunker down (noun)
a crunching noise

scrunch (verb)	hunker down (verb)
make wrinkles or creases on a smooth surface; make a pressed, folded or wrinkled line in; `crisp' is archaic	hold stubbornly to a position
sit on one's heels	sit on one's heels
make a noise typical of an engine lacking lubricants	take shelter