throw in the towel vs drop out

throw in the towel and drop out both are verbs.

Word	Noun	Adjective	Verb	Adverb
throw in the towel	No	No	Yes	No
drop out	No	No	Yes	No

As verbs, throw in the towel and drop out are synonyms defined as:

throw in the towel and drop out: give up in the face of defeat of lacking hope; admit defeat

Other synonyms of throw in the towel include chuck up the sponge, drop by the wayside, fall by the wayside, give up, quit, throw in.

throw in the towel (verb)	drop out (verb)
give up in the face of defeat of lacking hope; admit defeat	give up in the face of defeat of lacking hope; admit defeat
	leave school or an educational program prematurely
	withdraw from established society, especially because of disillusion with conventional values