pyroxyline vs cellulose nitrate

pyroxyline and cellulose nitrate both are nouns.

Word	Noun	Adjective	Verb	Adverb
pyroxyline	Yes	No	No	No
cellulose nitrate	Yes	No	No	No

As nouns, cellulose nitrate is a hypernym of pyroxyline; that is, cellulose nitrate is a word with a broader meaning than pyroxyline:

pyroxyline: highly flammable nitrocellulose used in making collodion and plastics and lacquers
cellulose nitrate: a nitric acid ester; used in lacquers and explosives

Other hypernyms of pyroxyline include guncotton, nitrocellulose, nitrocotton.

pyroxyline (noun)	cellulose nitrate (noun)
highly flammable nitrocellulose used in making collodion and plastics and lacquers	a nitric acid ester; used in lacquers and explosives