Ba vs atomic number 56

Ba and atomic number 56 both are nouns.

Word	Noun	Adjective	Verb	Adverb
Ba	Yes	No	No	No
atomic number 56	Yes	No	No	No

As nouns, Ba and atomic number 56 are synonyms defined as:

Ba and atomic number 56: a soft silvery metallic element of the alkali earth group; found in barite

Other synonyms of Ba include barium.

Ba (noun)	atomic number 56 (noun)
a soft silvery metallic element of the alkali earth group; found in barite	a soft silvery metallic element of the alkali earth group; found in barite