distribution law vs chemical science

distribution law and chemical science both are nouns.

Word	Noun	Adjective	Verb	Adverb
distribution law	Yes	No	No	No
chemical science	Yes	No	No	No

distribution law (noun)	chemical science (noun)
(chemistry) the total energy in an assembly of molecules is not distributed equally but is distributed around an average value according to a statistical distribution	the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions