Have you missed these? I still have thoughts.
1) Kickback and pushback mean very different things, but if taken literally the only difference is doing something with your hand or your foot.
2) We call indoor heating heat but we call air conditioning air, not cool. So when we ask someone. "Do you have air? Is the air on?" It's like, yes, everyone has air. No, you can't turn it on or off. Why don't we say, "Turn the cool on" or "Turn the cool down" which would be the appropriate opposite of "turn the heat up."
3) Why is the Philippines spelled with a "Ph" but Filipino spelled with an "F?"