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Both are completely different thing.

It was series of "openletterchallenge" the topic differs week to week.

We use to write letters to friend we will never forget, the person we will never forgive etc.
It was based on writing letters.

In my contest was
First topic was blood donation.
Second topic discussions removing bad habits.
Third is to write about mother.

Stay blessed!

Happy learning!
Happy Blogging!