atomic number 54 vs Xe

atomic number 54 and Xe both are nouns.

Word	Noun	Adjective	Verb	Adverb
atomic number 54	Yes	No	No	No
Xe	Yes	No	No	No

As nouns, atomic number 54 and Xe are synonyms defined as:

atomic number 54 and Xe: a colorless odorless inert gaseous element occurring in the earth's atmosphere in trace amounts

Other synonyms of atomic number 54 include xenon.

atomic number 54 (noun)	Xe (noun)
a colorless odorless inert gaseous element occurring in the earth's atmosphere in trace amounts	a colorless odorless inert gaseous element occurring in the earth's atmosphere in trace amounts