mimeograph machine vs copier

mimeograph machine and copier both are nouns.

Word	Noun	Adjective	Verb	Adverb
mimeograph machine	Yes	No	No	No
copier	Yes	No	No	No

As nouns, copier is a hypernym of mimeograph machine; that is, copier is a word with a broader meaning than mimeograph machine:

mimeograph machine: a rotary duplicator that uses a stencil through which ink is pressed (trade mark Roneo)
copier: apparatus that makes copies of typed, written or drawn material

Other hypernyms of mimeograph machine include duplicator.

mimeograph machine (noun)	copier (noun)
a rotary duplicator that uses a stencil through which ink is pressed (trade mark Roneo)	apparatus that makes copies of typed, written or drawn material