introspectiveness vs extroverted

introspectiveness is a noun but extroverted is not a noun.

Word	Noun	Adjective	Verb	Adverb
introspectiveness	Yes	No	No	No
extroverted	No	Yes	No	No

introspectiveness (noun)	extroverted (noun)
thoughtfulness about your own situation and feelings

introspectiveness (adjective)	extroverted (adjective)
	not introspective; examining what is outside yourself
	being concerned with the social and physical environment
	at ease in talking to others