decade vs X

decade and X both are nouns.

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

As nouns, decade and X are synonyms defined as:

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

Other synonyms of decade include 10, ten, tenner.

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