atomic number 13 vs aluminum

atomic number 13 and aluminum both are nouns.

Word	Noun	Adjective	Verb	Adverb
atomic number 13	Yes	No	No	No
aluminum	Yes	No	No	No

As nouns, atomic number 13 and aluminum are synonyms defined as:

atomic number 13 and aluminum: a silvery ductile metallic element found primarily in bauxite

Other synonyms of atomic number 13 include Al, aluminium.

atomic number 13 (noun)	aluminum (noun)
a silvery ductile metallic element found primarily in bauxite	a silvery ductile metallic element found primarily in bauxite