Roneograph vs duplicator

Roneograph and duplicator both are nouns.

Word	Noun	Adjective	Verb	Adverb
Roneograph	Yes	No	No	No
duplicator	Yes	No	No	No

As nouns, duplicator is a hypernym of Roneograph; that is, duplicator is a word with a broader meaning than Roneograph:

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

Other hypernyms of Roneograph include copier.

Roneograph (noun)	duplicator (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