chemical science vs deoxidise

chemical science is a noun but deoxidise is not a noun.

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

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

chemical science (verb)	deoxidise (verb)
	to remove oxygen from a compound, or cause to react with hydrogen or form a hydride, or to undergo an increase in the number of electrons