X vs 10

X and 10 both are nouns.

Word	Noun	Adjective	Verb	Adverb
X	Yes	No	No	No
10	Yes	Yes	No	No

As nouns, X and 10 are synonyms defined as:

X and 10: the cardinal number that is the sum of nine and one; the base of the decimal system

Other synonyms of X include decade, ten, tenner.

X (noun)	10 (noun)
street names for methylenedioxymethamphetamine	the cardinal number that is the sum of nine and one; the base of the decimal system
the 24th letter of the Roman alphabet
the cardinal number that is the sum of nine and one; the base of the decimal system

X (adjective)	10 (adjective)
	being one more than nine