Here's why:
* Conjunctions connect words, phrases, or clauses.
* "Though" introduces a subordinate clause that contrasts with the main clause.
Example:
* Though it was raining, we went for a walk.
In this sentence, "though" connects the subordinate clause "it was raining" to the main clause "we went for a walk." It shows a contrast between the weather and our action.
Let me know if you'd like more examples!