esterify vs chemical science

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

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

esterify (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

esterify (verb)	chemical science (verb)
change (a compound) into an ester