coachbuilder vs artificer

coachbuilder and artificer both are nouns.

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

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

Other hypernyms of coachbuilder include artisan, craftsman, journeyman.

coachbuilder (noun)	artificer (noun)
a craftsman who makes the bodies of motor vehicles	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.