The beasts of burden carried heavy loads across the desert.

Trick-or-treating is a popular Halloween activity.

We love trick-or-treating on Halloween night.

I need to buy a new garage door opener.

Birds of prey are skilled hunters.

I need to scrape off the old paint before applying a new coat.

The dyadic operation in algebra combines two operands.

The set operation allows you to perform various operations on sets, such as union, intersection, and difference.

The negation is a unary operation in algebra.

One hundred million dollars were donated to the charity.