What is the difference between ces and ses in french?

You're likely thinking of the French words "c'est" and "ce sont." They are both common and important to understand because they both translate to "it is" or "they are" in English. Here's the difference:

* "C'est" is used with singular subjects.

* Example: "C'est un livre" (It is a book)

* "Ce sont" is used with plural subjects.

* Example: "Ce sont des livres" (They are books)

Here's a simple way to remember:

* "C'est" sounds like "say" and is for singular subjects.

* "Ce sont" sounds like "they" and is for plural subjects.

Let me know if you'd like more examples!