If you're asking if introvert and extrovert are antonyms or synonyms, they are antonyms. To be introverted is to find comfort in being by yourself, while being extraverted is to have more fun surrounded by people. If you're asking for synonyms and antonyms for both, here's that:
Introvert
S: Quiet A: Outgoing
Extroverted
S: Outgoing A: Quiet
Not exactly sure what you were asking for, but I hope this helps!
(Also, my synonyms and antonyms are not the best...)