withstander vs scrapper

withstander and scrapper both are nouns.

Word	Noun	Adjective	Verb	Adverb
withstander	Yes	No	No	No
scrapper	Yes	No	No	No

As nouns, scrapper is a hypernym of withstander; that is, scrapper is a word with a broader meaning than withstander:

Other hypernyms of withstander include battler, belligerent, combatant, fighter.

withstander (noun)	scrapper (noun)
an opponent who resists with force or resolution	someone who fights (or is fighting)
a fighter who holds out against attack