This is the 12255th most frequent French word.
ç
The French letter "ç" (c with a cedilla) is used to indicate the pronunciation /s/ instead of /k/, typically before "a," "o," or "u."
Here 'ça' is used as a pronoun meaning 'it'.
Ça va bien, merci.
It is going well, thank you.
In this sentence, 'ç’a' is a contraction of 'ça a', meaning 'it has'.
Je ne sais pas ce que ç’a changé.
I don't know what it has changed.
Here, 'ça' underscores the demonstrative 'that' to emphasize an object or situation.