What's the difference between frost, a freeze and a hard freeze?

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Mike's Hard Freeze - Finley Beer

When is the first frost/freeze for Ohio and West Virginia?

Frost vs. freeze: What's the difference?

What's the difference between frost, a freeze and a hard freeze?

Difference Between Frost And Freeze - How Frost And Freeze Hurts Plants

Let's talk about Arizona weather: The difference between a freeze watch and a freeze warning

First frost happening later and later