atomic number 41 vs niobium

atomic number 41 and niobium both are nouns.

Word	Noun	Adjective	Verb	Adverb
atomic number 41	Yes	No	No	No
niobium	Yes	No	No	No

As nouns, atomic number 41 and niobium are synonyms defined as:

atomic number 41 and niobium: a soft grey ductile metallic element used in alloys; occurs in niobite; formerly called columbium

Other synonyms of atomic number 41 include Nb.

atomic number 41 (noun)	niobium (noun)
a soft grey ductile metallic element used in alloys; occurs in niobite; formerly called columbium	a soft grey ductile metallic element used in alloys; occurs in niobite; formerly called columbium