chairperson, chairwoman, chairman, preside, president, hot seat, professorship, moderate, electric chair, lead, more...

table, sofa, bench, stool, floor

armchair, rocking chair, recliner, folding chair, stool, beanbag, throne, stoop, more...

easy, arm, big, comfortable, empty, wooden, old, high, electric, backed, large

thing you sit on,   head of a meeting,   item of furniture,   armless seat,   run the committee,   sits on a table,   you sit on it,   a seat,   sat down on the,   place to sit