flake out vs drop off

flake out and drop off both are verbs.

Word	Noun	Adjective	Verb	Adverb
flake out	No	No	Yes	No
drop off	No	No	Yes	No

As verbs, flake out and drop off are synonyms defined as:

Other synonyms of flake out include dope off, doze off, drift off, drowse off, fall asleep, nod off.

flake out (verb)	drop off (verb)
change from a waking to a sleeping state	change from a waking to a sleeping state
	fall to a lower standard
	fall or diminish
	retreat
	remove (cargo, people, etc.) from and leave