hectograph vs collotype

hectograph and collotype both are nouns.

Word	Noun	Adjective	Verb	Adverb
hectograph	Yes	No	Yes	No
collotype	Yes	No	No	No

As nouns, collotype is a hypernym of hectograph; that is, collotype is a word with a broader meaning than hectograph:

hectograph: duplicator consisting of a gelatin plate from which ink can be taken to make a copy
collotype: a photomechanical printing process that uses a glass plate with a gelatin surface that carries the image to be reproduced; can be used with one or more colors

Other hypernyms of hectograph include copier, duplicator, collotype printing, photogelatin process.

hectograph (noun)	collotype (noun)
duplicator consisting of a gelatin plate from which ink can be taken to make a copy	a photomechanical printing process that uses a glass plate with a gelatin surface that carries the image to be reproduced; can be used with one or more colors

hectograph (verb)	collotype (verb)
copy on a duplicator