cadmium vs atomic number 48

cadmium and atomic number 48 both are nouns.

Word	Noun	Adjective	Verb	Adverb
cadmium	Yes	No	No	No
atomic number 48	Yes	No	No	No

As nouns, cadmium and atomic number 48 are synonyms defined as:

cadmium and atomic number 48: a soft bluish-white ductile malleable toxic bivalent metallic element; occurs in association with zinc ores

Other synonyms of cadmium include Cd.

cadmium (noun)	atomic number 48 (noun)
a soft bluish-white ductile malleable toxic bivalent metallic element; occurs in association with zinc ores	a soft bluish-white ductile malleable toxic bivalent metallic element; occurs in association with zinc ores