extraversion vs extroversion

extraversion and extroversion both are nouns.

Word	Noun	Adjective	Verb	Adverb
extraversion	Yes	No	No	No
extroversion	Yes	No	No	No

As nouns, extraversion and extroversion are synonyms defined as:

extraversion and extroversion: (psychology) an extroverted disposition; concern with what is outside the self

extraversion (noun)	extroversion (noun)
(psychology) an extroverted disposition; concern with what is outside the self	(psychology) an extroverted disposition; concern with what is outside the self