bunk vs take flight

bunk is a noun but take flight is not a noun.

Word	Noun	Adjective	Verb	Adverb
bunk	Yes	No	Yes	No
take flight	No	No	Yes	No

As verbs, take flight is a hyponym of bunk; that is, take flight is a word with a more specific, narrower meaning than bunk:

Other hyponyms of bunk include flee, fly, skedaddle.

bunk (noun)	take flight (noun)
a bed on a ship or train; usually in tiers
a rough bed (as at a campsite)
beds built one above the other
a long trough for feeding cattle
unacceptable behavior (especially ludicrously false statements)
a message that seems to convey no meaning

bunk (verb)	take flight (verb)
flee; take to one's heels; cut and run	run away quickly
provide with a bunk
avoid paying