Although and though both mean ‘in spite of something’. They are subordinating conjunctions. This means that the clause which they introduce is a subordinate clause, which needs a main clause to make it complete:
[main clause]Everyone enjoyed the trip to the finalalthough[subordinate clause]we lost the match!
[subordinate clause]Though it was rainy, [main clause]we put on our jackets and went for a walk.
Though is more common than although in general and it is much more common than although in speaking. For emphasis, we often use even with though (but not with although).
When the though/although clause comes before the main clause, we usually put a comma at the end of the clause. When the main clause comes first, we don’t need to use a comma:
Even though I earn a lot of money every month, I never seem to have any to spare!
I still feel hungry even though I had a big lunch.