shaper vs miller

shaper and miller both are nouns.

Word	Noun	Adjective	Verb	Adverb
shaper	Yes	No	No	No
miller	Yes	No	No	No

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

shaper: a machine tool for shaping metal or wood
miller: machine tool in which metal that is secured to a carriage is fed against rotating cutters that shape it

Other hyponyms of shaper include lathe, milling machine, machining center.

shaper (noun)	miller (noun)
a machine tool for shaping metal or wood	any of various moths that have powdery wings
a person who makes things	machine tool in which metal that is secured to a carriage is fed against rotating cutters that shape it
	someone who works in a mill (especially a grain mill)