atomic number 45 vs rhodium

atomic number 45 and rhodium both are nouns.

Word	Noun	Adjective	Verb	Adverb
atomic number 45	Yes	No	No	No
rhodium	Yes	No	No	No

As nouns, atomic number 45 and rhodium are synonyms defined as:

atomic number 45 and rhodium: a white hard metallic element that is one of the platinum group and is found in platinum ores; used in alloys with platinum

Other synonyms of atomic number 45 include Rh.

atomic number 45 (noun)	rhodium (noun)
a white hard metallic element that is one of the platinum group and is found in platinum ores; used in alloys with platinum	a white hard metallic element that is one of the platinum group and is found in platinum ores; used in alloys with platinum