"we avoid opening the fridge and freezer to keep the cold inside."
Technically, you cannot keep the cold inside because cold is a word for the absence of warmth (energy), so you're actually trying to keep the warmth outside.
Words indicating the absence of something (cold, darkness, ...) are called privatives.
"we avoid opening the fridge and freezer to keep the cold inside."
Technically, you cannot keep the cold inside because cold is a word for the absence of warmth (energy), so you're actually trying to keep the warmth outside.
Words indicating the absence of something (cold, darkness, ...) are called privatives.
h/t Terry Pratchett