Hectograph and Mimeograph

Hectograph noun - Duplicator consisting of a gelatin plate from which ink can be taken to make a copy.

Mimeograph and hectograph are semantically related. In some cases you can replace term "Mimeograph" with "Hectograph", this nouns are similar.

Mimeograph noun - A rotary duplicator that uses a stencil through which ink is pressed (trade mark Roneo).

Hectograph and mimeograph are semantically related. Sometimes you can replace term "Hectograph" with "Mimeograph", this nouns are similar.