chemical science vs migration

chemical science and migration both are nouns.

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

chemical science (noun)	migration (noun)
the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions	the movement of persons from one country or locality to another
	the periodic passage of groups of animals (especially birds or fishes) from one region to another for feeding or breeding
	(chemistry) the nonrandom movement of an atom or radical from one place to another within a molecule
	a group of people migrating together (especially in some given time period)