lynch mob vs rabble

lynch mob and rabble both are nouns.

Word	Noun	Adjective	Verb	Adverb
lynch mob	Yes	No	No	No
rabble	Yes	No	No	No

As nouns, rabble is a hypernym of lynch mob; that is, rabble is a word with a broader meaning than lynch mob:

lynch mob: a mob that kills a person for some presumed offense without legal authority
rabble: a disorderly crowd of people

Other hypernyms of lynch mob include mob, rout.

lynch mob (noun)	rabble (noun)
a mob that kills a person for some presumed offense without legal authority	a disorderly crowd of people
	disparaging terms for the common people