though, although

Though he is poor, he is generous.

"although" can be used in the same way. But, it is rather formal.

The example sentence above can be changed into the sentences below:

Poor as he is, he is generous.
In spite of his poverty, he is generous.
With all his poverty, he is generous.

Extacted and translated from 出仙潔『ステップ英語の構文-基礎をかためる１３２パターン-』（日験），１９９２

This is from a English reference book for students preparing for university entrance examinations. However, you can learn about "though" more.

First, a clause that contains this type of logical connector can be either before or after the main clause.

ex. He was still shivering though the air was warm.

Second, "though" can be used at the end of a sentence. "Although" can't, though.

ex. Ted knows all his friends would be there. He didn't want to go, though.

Third, in Spoken English, "despite the fact that" is frequently used instead of "though" or "although."

ex. Despite the fact that she was tired, she stayed up to watch a movie on TV.

Despite the fact that he used to be a baseball player, he doesn't know much about baseball. It is kind of funny.