Chairs, stools, sofas and benches are all seats.
Please have/take a seat.
Just leave you jacket in/on your seat.
I got a seat on the flight to New York.
My ticket says 22D but there's already someone in that seat.
I can sell seats to help with the concert. (Key English Test; A2; French)
a seat in parliament
a congressional seat
a seat on the company board of trustees
This is the story of a man who spent his life paying kickbacks to achieve power and eventually a seat in the parliament. (Certificate of Proficiency in English; C2; Italian)
The director was seated on his right.
A big pink elephant was seated near me. (First Certificate in English; B2; French)
The new concert hall seats 1500 people.
According to the owners, the Swan seats 100 guests and it is always advisable to make reservations. (Certificate of Proficiency in English; C2; Swedish)