guncotton vs pyroxylin

guncotton and pyroxylin both are nouns.

Word	Noun	Adjective	Verb	Adverb
guncotton	Yes	No	No	No
pyroxylin	Yes	No	No	No

As nouns, pyroxylin is a hyponym of guncotton; that is, pyroxylin is a word with a more specific, narrower meaning than guncotton:

guncotton: a nitric acid ester; used in lacquers and explosives
pyroxylin: highly flammable nitrocellulose used in making collodion and plastics and lacquers

Other hyponyms of guncotton include pyrocellulose, pyroxyline.

guncotton (noun)	pyroxylin (noun)
a nitric acid ester; used in lacquers and explosives	highly flammable nitrocellulose used in making collodion and plastics and lacquers