X vs tenner

X and tenner both are nouns.

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

As nouns, X and tenner are synonyms defined as:

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

Other synonyms of X include 10, decade, ten.

X (noun)	tenner (noun)
street names for methylenedioxymethamphetamine	a United States bill worth 10 dollars
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