X vs ecstasy

X and ecstasy both are nouns.

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

As nouns, X and ecstasy are synonyms defined as:

Other synonyms of X include Adam, cristal, disco biscuit, go, hug drug, XTC.

X (noun)	ecstasy (noun)
street names for methylenedioxymethamphetamine	street names for methylenedioxymethamphetamine
the 24th letter of the Roman alphabet	a state of being carried away by overwhelming emotion
the cardinal number that is the sum of nine and one; the base of the decimal system	a state of elated bliss