However vs although

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Dziś różnica pomiędzy ALTHOUGH vs HOWEVER
Although means “in spite of the fact that…”.
However means “but”.
EXAMPLES:
Although the weather was cold, we decided not to wear our jackets.
We decided not to wear our jackets. However, the weather was cold.

So in general, we use “however” at the beginning of a new sentence, with a comma after it. “Although” can be used at the beginning or in the middle of a sentence, but it doesn’t have a comma afterwards.