Common Mistakes : Chair
noun
.BAD: During the flight she sat on the chair behind me .GOOD: During the flight she sat in the seat behind me
: seat = a place to sit, as found in a cinema, train, bus etc .To be on the safe side, you’d better reserve a seat
: chair = a movable seat for one person .Before the children go home, they have to put all the chairs on top of the desks