pyrochemical vs chemical

pyrochemical is not a noun while chemical is a noun.

Word	Noun	Adjective	Verb	Adverb
pyrochemical	No	Yes	No	No
chemical	Yes	Yes	No	No

pyrochemical (noun)	chemical (noun)
	material produced by or used in a reaction involving changes in atoms or molecules

pyrochemical (adjective)	chemical (adjective)
of or relating to or produced by chemical reactions at high temperatures	relating to or used in chemistry
	of or made from or using substances produced by or used in reactions involving atomic or molecular changes