Roneograph vs Roneo

Roneograph and Roneo both are nouns.

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

As nouns, Roneograph and Roneo are synonyms defined as:

Roneograph and Roneo: a rotary duplicator that uses a stencil through which ink is pressed (trade mark Roneo)

Other synonyms of Roneograph include mimeo, mimeograph, mimeograph machine.

Roneograph (noun)	Roneo (noun)
a rotary duplicator that uses a stencil through which ink is pressed (trade mark Roneo)	a rotary duplicator that uses a stencil through which ink is pressed (trade mark Roneo)