bunk vs flee

bunk is a noun but flee is not a noun.

Word	Noun	Adjective	Verb	Adverb
bunk	Yes	No	Yes	No
flee	No	No	Yes	No

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

Other hyponyms of bunk include fly, take flight, skedaddle.

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