X vs ten

X and ten both are nouns.

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

As nouns, X and ten are synonyms defined as:

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

Other synonyms of X include 10, decade, tenner.

X (noun)	ten (noun)
street names for methylenedioxymethamphetamine	one of four playing cards in a deck with ten pips on the face
the 24th letter of the Roman alphabet	the cardinal number that is the sum of nine and one; the base of the decimal system
the cardinal number that is the sum of nine and one; the base of the decimal system

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