Roneo vs copier

Roneo and copier both are nouns.

Word	Noun	Adjective	Verb	Adverb
Roneo	Yes	No	No	No
copier	Yes	No	No	No

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

Roneo: 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 Roneo include duplicator.

Roneo (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