drop out vs throw in

drop out and throw in both are verbs.

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

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

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

drop out (verb)	throw in (verb)
give up in the face of defeat of lacking hope; admit defeat	to insert between other elements
leave school or an educational program prematurely	give up in the face of defeat of lacking hope; admit defeat
withdraw from established society, especially because of disillusion with conventional values	add as an extra or as a gratuity