<em><u>Communicative </u></em><u>means informative or ready to talk or convey information</u>. On the other hand, <em><u>withdrawn </u></em><u>refers to the lack of wishing to communicate with other people</u>. Synonyms of <em>withdrawn </em>are unsociable, introverted and reserved; while a few equivalents of <em>communicative </em>are conversational, demonstrative and talkative.