The devil's proofs are often used to challenge religious beliefs.

Ontological proofs are philosophical arguments for the existence of God.

Proofs of concepts are essential for validating new ideas.

The proof charges were presented as evidence in the trial.

Proof systems are essential in computer science.

Proofs-of-concept are essential for validating new ideas.

This heat-proof container can withstand high temperatures.

This phone has a scratch-proof screen.

The multiple success stories are proofs positive of the effectiveness of our program.

This bird feeder is squirrel-proof.