I have two half-siblings.

My half-cousin and I share one biological grandparent.

My half-sibling and I have the same father but different mothers.

I need to replace the quartz halogen lamps in my living room.

Half-reactions are important in redox reactions.

I receive my salary half-monthly.

There were many half-castes in the community.

They are each other's better halves.

The house has three half baths.

I bought a baker's half dozen of bagels for breakfast.