transvestism vs transvestitism

transvestism and transvestitism both are nouns.

Word	Noun	Adjective	Verb	Adverb
transvestism	Yes	No	No	No
transvestitism	Yes	No	No	No

As nouns, transvestism and transvestitism are synonyms defined as:

transvestism and transvestitism: the practice of adopting the clothes or the manner or the sexual role of the opposite sex

Other synonyms of transvestism include cross dressing.

transvestism (noun)	transvestitism (noun)
the practice of adopting the clothes or the manner or the sexual role of the opposite sex	the practice of adopting the clothes or the manner or the sexual role of the opposite sex