abundance vs chemical science

abundance and chemical science both are nouns.

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

abundance (noun)	chemical science (noun)
the property of a more than adequate quantity or supply	the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions
(chemistry) the ratio of the total mass of an element in the earth's crust to the total mass of the earth's crust; expressed as a percentage or in parts per million
(physics) the ratio of the number of atoms of a specific isotope of an element to the total number of isotopes present