dynamitist vs dynamiter

dynamitist and dynamiter both are nouns.

Word	Noun	Adjective	Verb	Adverb
dynamitist	Yes	No	No	No
dynamiter	Yes	No	No	No

As nouns, dynamitist and dynamiter are synonyms defined as:

dynamitist and dynamiter: a person who uses dynamite in a revolutionary cause

dynamitist (noun)	dynamiter (noun)
a person who uses dynamite in a revolutionary cause	a person who uses dynamite in a revolutionary cause