abandon vs forfeit

abandon and forfeit both are nouns.

Word	Noun	Adjective	Verb	Adverb
abandon	Yes	No	Yes	No
forfeit	Yes	Yes	Yes	No

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

abandon: forsake, leave behind
forfeit: lose (something) or lose the right to (something) by some error, offense, or crime

Other hyponyms of abandon include chuck, ditch, dispense with, forego, forgo, give up, throw overboard, waive, consign.

abandon (noun)	forfeit (noun)
the trait of lacking restraint or control; reckless freedom from inhibition or worry	the act of losing or surrendering something as a penalty for a mistake or fault or failure to perform etc.
a feeling of extreme emotional intensity	a penalty for a fault or mistake that involves losing or giving up something
	something that is lost or surrendered as a penalty

abandon (adjective)	forfeit (adjective)
	surrendered as a penalty

abandon (verb)	forfeit (verb)
leave someone who needs or counts on you; leave in the lurch	lose (something) or lose the right to (something) by some error, offense, or crime
stop maintaining or insisting on; of ideas or claims
leave behind empty; move out of
forsake, leave behind
give up with the intent of never claiming again