She's very friendly. She's not very talkative. (though)
She's very friendly. She's not very talkative, though. (though)
I don't like him. I admit he's a great employee. (although / even though)
Although / even though I don't like him, I admit he's a great employee.
I didn't call you. I didn't want to disturb you. (in order not to)
I didn't call you in order not to disturb you.