stoichiometry vs chemical science

stoichiometry and chemical science both are nouns.

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

stoichiometry (noun)	chemical science (noun)
(chemistry) the relation between the quantities of substances that take part in a reaction or form a compound (typically a ratio of whole integers)	the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions