Go downhill and Go bad

Go bad and go downhill are semantically related in wither topic. In some cases you can use "Go bad" instead a verb phrase "Go downhill", when it comes to topics like corrode.

Go bad verb - Become unfit for consumption or use.

Go downhill and go bad are semantically related in wither topic. Sometimes you can use "Go downhill" instead a verb phrase "Go bad", if it concerns topics such as corrode.