drop by the wayside vs throw in the towel

drop by the wayside and throw in the towel both are verbs.

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

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

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

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

drop by the wayside (verb)	throw in the towel (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