desorb vs chemical science

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

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

desorb (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

desorb (verb)	chemical science (verb)
go away from the surface to which (a substance) is adsorbed
remove from a surface on which it is adsorbed