lapidator vs assailant

lapidator and assailant both are nouns.

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

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

lapidator: an attacker who pelts the victim with stones (especially with intent to kill)
assailant: someone who attacks

Other hypernyms of lapidator include aggressor, assaulter, attacker.

lapidator (noun)	assailant (noun)
an attacker who pelts the victim with stones (especially with intent to kill)	someone who attacks