sofas
They're usually just called .. 'seats'.
No, the noun seats is the plural form for the noun seat. A collective noun is a word used to group nouns; the collective noun for seats is a row of seats.
They are generally just called "seats".
1:3
A political party is a group of people who have similar political views, that form together in order to win a seat or seats in government. By winning seats they hope to influence government policy to support their views.
1:3
Seats in a basketball court are called bleachers.
spas
pews, or pues
seat count
A person who shows people to their seats in a theatre is called an usher.