Names types of conjunctions

Although is similar to 'however' and 'but'. It can be used at the begining of a clause as a transition or between two indepdent clauses with a comma.

"Although" is a subordinating conjunction. It does transition between two independent clauses, but it indicates that one is less important than the other, whereas coordinating conjunctions indicate that the clauses are of equal importance. Other subordinating conjunctions include after, as, because, before, if, since, that, unless, until, when, where and while.

eg.

"I don't mind flying, although I've had some bad experiences on planes."

"Although Jerry had been studying for an hour, he decided to go through his notes again to make sure he remembered everything."