An educator or instructor in a school or other educational institution.

शिक्षक

English Usage: The teacher explained the topic thoroughly.

Hindi Usage: शिक्षक ने विषय को पूरी तरह से समझाया।

Someone trained to give guidance on personal, social, or psychological issues.

सलाहकार

English Usage: The counsellor helped her understand her feelings.

Hindi Usage: सलाहकार ने उसे अपनी भावनाओं को समझने में मदद की।