Would you please help me about a conjunction 'for'?

Is 'for' different from 'because' or 'since'?

I can't distinguish. For example,

It must be very cold outside, for the lake is frozen over.

In the above example, can I use 'since' or 'because' instead of 'for'?

If not, would you explain the reason with some examples?

Thank you!
Yes, you can use the other conjunctions here.
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Thank you for the reply!

Is there any difference in meaning?
No, not here.