denitrify vs chemical science

denitrify is not a noun while chemical science is a noun.

Word	Noun	Adjective	Verb	Adverb
denitrify	No	No	Yes	No
chemical science	Yes	No	No	No

denitrify (noun)	chemical science (noun)
	the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions

denitrify (verb)	chemical science (verb)
remove nitrogen from