I would like to know the difference between:

then, than and them

Ps.: English is not my first language, and I do have a good job, I need to improve my english grammar skills.

Thanks

Firstly, these words are not related in any way.



Then is about time. It happened then.

Than is used to compare. My house is bigger than his house.

Them is related to they. I saw them.

You know that I > me.
Well, they > them.

He knows me.
He knows them.

These words are not related in any way.

Then is about time. I want to go THEN.
Than is used to compare. I like you better THAN him.
Them is related to they. I know THEM.

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Replying to:

Firstly, these words are not related in any way.



Then is about time. It happened then.

Than is used to compare. My house is bigger than his house.

Them is related to they. I saw them.

You know that I > me.
Well, they > them.

He knows me.
He knows them.