Are those pyramids called pyramids because they the shape that we call pyramid or do we call the shape pyramid because they look like those pyramids?

Don’t blame them. It’s really complicated for them, you need to multiply or divide by 10th to convert. That’s Math! Don’t try to explain that to someone who uses his Feet to measure things. At least NASA uses the metric system (because they know is better), but don’t tell that to US Americans.