Annulment cancels the wedding making it invalid from the start. In the contrary, divorce ends their married life but it is still admitted that they are once married. After an annulment or divorce ends, people can marry again.

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Annulment cancels the wedding making it invalid from the start. 

>> Correct!

OR: Annulment cancels the wedding, rendering it null and void from the beginning.

In the contrary, divorce ends their married life but it is still admitted that they are once married. 

>> Correct!

OR: Divorce, on the other hand, ends their married life while retaining their marital status.

After an annulment or divorce ends, people can marry again. 

>> Correct!

OR: People can remarry after an annulment or divorce.