This is the 8619th most frequent French word.
are
An "are" is a unit of area equal to 100 square meters.
In this sentence, 'sont' (are) is used as the plural conjugation of the verb 'être' to define what the subject 'ce' (these) references.
Ce sont les livres que vous voulez.
These are the books that you want.
Here, 'êtes' (are) is in the second-person plural form of 'être,' describing the state or characteristic of the subject 'vous' (you).
Vous êtes étudiants.
You are students.
The word 'sont' (are) is used as the plural third-person form of 'être' to attribute the state of calmness to the subject 'les chats' (the cats).