spiller vs assailant

spiller and assailant both are nouns.

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

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

Other hypernyms of spiller include aggressor, assaulter, attacker.

spiller (noun)	assailant (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