onionskin vs typing paper

onionskin and typing paper both are nouns.

Word	Noun	Adjective	Verb	Adverb
onionskin	Yes	No	No	No
typing paper	Yes	No	No	No

As nouns, typing paper is a hypernym of onionskin; that is, typing paper is a word with a broader meaning than onionskin:

onionskin: a thin strong lightweight translucent paper used especially for making carbon copies
typing paper: writing paper suitable for use in a typewriter

Other hypernyms of onionskin include typewriter paper.

onionskin (noun)	typing paper (noun)
a thin strong lightweight translucent paper used especially for making carbon copies	writing paper suitable for use in a typewriter