Give the once over and Knock cold

Give the once over verb - Look at with a critical eye.

Knock cold and give the once over are semantically related. In some cases you can use "Knock cold" instead a verb "Give the once over".

Knock cold verb - Knock unconscious or senseless.

Give the once over and knock cold are semantically related. Sometimes you can use "Give the once over" instead a verb phrase "Knock cold".