The buyer and seller exchange contracts to finalize the sale.

They exchanged contracts for the house.

Investors can use future contracts to hedge against price fluctuations.

The workers refused to sign the yellow dog contracts.

Many workers are unhappy with zero-hour contracts.

Many workers are unhappy with zero-hours contracts.

Many companies prefer to hire employees on fixed-term contracts.

Retirement annuity contracts provide a steady income during retirement.

Many companies are adopting open-book contracts to promote transparency and collaboration.

The Lorentz contraction is a phenomenon in special relativity.