atomic number 54 vs xenon

atomic number 54 and xenon both are nouns.

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

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

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

Other synonyms of atomic number 54 include Xe.

atomic number 54 (noun)	xenon (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