insult vs billingsgate

insult and billingsgate both are nouns.

Word	Noun	Adjective	Verb	Adverb
insult	Yes	No	Yes	No
billingsgate	Yes	No	No	No

As nouns, billingsgate is a hyponym of insult; that is, billingsgate is a word with a more specific, narrower meaning than insult:

Other hyponyms of insult include low blow, scurrility, cut, stinger, invective, vitriol, vituperation.

insult (noun)	billingsgate (noun)
a deliberately offensive act or something producing the effect of deliberate disrespect	foul-mouthed or obscene abuse
a rude expression intended to offend or hurt

insult (verb)	billingsgate (verb)
treat, mention, or speak to rudely