There are words that indicate time, such as since and while.
Then there are words that indicate causality and contrasts such as because and although.
Since = time
Since the beginning of time, all parents have loved their children.
Because = causality
Because parents love their children, they try not to kill them no matter what the provocation.
While = time
She covered her ears while singing Janis Joplin at the top of her lungs in order not to kill her darling children.
Although = contrast
Although she could not hear her children singing 99 bottles of beer on the wall with her hands over her ears, she could see their mouths moving and decided to go into the other room.
What trips you up?