pyrocellulose vs nitrocellulose

pyrocellulose and nitrocellulose both are nouns.

Word	Noun	Adjective	Verb	Adverb
pyrocellulose	Yes	No	No	No
nitrocellulose	Yes	No	No	No

As nouns, nitrocellulose is a hypernym of pyrocellulose; that is, nitrocellulose is a word with a broader meaning than pyrocellulose:

pyrocellulose: nitrocellulose containing less nitrogen than guncotton; used in making smokeless powder
nitrocellulose: a nitric acid ester; used in lacquers and explosives

Other hypernyms of pyrocellulose include cellulose nitrate, guncotton, nitrocotton.

pyrocellulose (noun)	nitrocellulose (noun)
nitrocellulose containing less nitrogen than guncotton; used in making smokeless powder	a nitric acid ester; used in lacquers and explosives