vanadium vs atomic number 23

vanadium and atomic number 23 both are nouns.

Word	Noun	Adjective	Verb	Adverb
vanadium	Yes	No	No	No
atomic number 23	Yes	No	No	No

As nouns, vanadium and atomic number 23 are synonyms defined as:

vanadium and atomic number 23: a soft silvery white toxic metallic element used in steel alloys; it occurs in several complex minerals including carnotite and vanadinite

Other synonyms of vanadium include V.

vanadium (noun)	atomic number 23 (noun)
a soft silvery white toxic metallic element used in steel alloys; it occurs in several complex minerals including carnotite and vanadinite	a soft silvery white toxic metallic element used in steel alloys; it occurs in several complex minerals including carnotite and vanadinite