argon vs Ar

argon and Ar both are nouns.

Word	Noun	Adjective	Verb	Adverb
argon	Yes	No	No	No
Ar	Yes	No	No	No

As nouns, argon and Ar are synonyms defined as:

argon and Ar: a colorless and odorless inert gas; one of the six inert gases; comprises approximately 1% of the earth's atmosphere

Other synonyms of argon include atomic number 18.

argon (noun)	Ar (noun)
a colorless and odorless inert gas; one of the six inert gases; comprises approximately 1% of the earth's atmosphere	a colorless and odorless inert gas; one of the six inert gases; comprises approximately 1% of the earth's atmosphere