An example of sake is someone joining the military after a loved one was killed in the World Trade Center, he is joining for the sake of his loved one.
An example of sake is a woman not drinking while pregnant for the health of her unborn baby, she is avoiding drinking for the sake of her baby.
An example of sake is the warm drink people have at a sushi restaurant.
A quarrel only for the sake of argument.
For the sake of his health.
For her own sake.
For the sake of harmony.
For my sake.