atomic number 27 vs Co

atomic number 27 and Co both are nouns.

Word	Noun	Adjective	Verb	Adverb
atomic number 27	Yes	No	No	No
Co	Yes	No	No	No

As nouns, atomic number 27 and Co are synonyms defined as:

atomic number 27 and Co: a hard ferromagnetic silver-white bivalent or trivalent metallic element; a trace element in plant and animal nutrition

Other synonyms of atomic number 27 include cobalt.

atomic number 27 (noun)	Co (noun)
a hard ferromagnetic silver-white bivalent or trivalent metallic element; a trace element in plant and animal nutrition	a hard ferromagnetic silver-white bivalent or trivalent metallic element; a trace element in plant and animal nutrition