machinist vs artificer

machinist and artificer both are nouns.

Word	Noun	Adjective	Verb	Adverb
machinist	Yes	No	No	No
artificer	Yes	No	No	No

As nouns, artificer is a hypernym of machinist; that is, artificer is a word with a broader meaning than machinist:

Other hypernyms of machinist include artisan, craftsman, journeyman.

machinist (noun)	artificer (noun)
a craftsman skilled in operating machine tools	a skilled worker who practices some trade or handicraft
	someone who is the first to think of or make something
	an enlisted man responsible for the upkeep of small arms and machine guns etc.