My older sister baked a chocolate cake for my birthday.

The engineer inspected the sister blocks to ensure they matched the original design.

The crew replaced the worn sister block before the storm hit to ensure the halyards ran smoothly.

The carpenter lined up the sister hooks along the fence to hang the planters.

The captain examined the sister hook, where the shank of one formed a mousing for the other, to ensure the trawl wouldn't come loose.

After school, my younger sister practiced the piano for two hours.

My sister is a humper.

At the wedding, my cousin sister gave a heartfelt speech that made everyone cry.

My full-sister and I traveled across the country to attend our grandmother's funeral.

Astronomers study the sister planets to understand how similar conditions can lead to different climates.