spiller vs assaulter

spiller and assaulter both are nouns.

Word	Noun	Adjective	Verb	Adverb
spiller	Yes	No	No	No
assaulter	Yes	No	No	No

As nouns, assaulter is a hypernym of spiller; that is, assaulter is a word with a broader meaning than spiller:

Other hypernyms of spiller include aggressor, assailant, attacker.

spiller (noun)	assaulter (noun)
a long fishing line with many shorter lines and hooks attached to it (usually suspended between buoys)	someone who attacks
an attacker who sheds or spills blood