Xe vs argonon

Xe and argonon both are nouns.

Word	Noun	Adjective	Verb	Adverb
Xe	Yes	No	No	No
argonon	Yes	No	No	No

As nouns, argonon is a hypernym of Xe; that is, argonon is a word with a broader meaning than Xe:

Xe: a colorless odorless inert gaseous element occurring in the earth's atmosphere in trace amounts
argonon: any of the chemically inert gaseous elements of the helium group in the periodic table

Other hypernyms of Xe include inert gas, noble gas.

Xe (noun)	argonon (noun)
a colorless odorless inert gaseous element occurring in the earth's atmosphere in trace amounts	any of the chemically inert gaseous elements of the helium group in the periodic table