wording question on pump, compressor, fan and blower.

I would think there is a definition but I cant find one

Is there a line where a device it to be called a pump, as in a bicycle pump or a compressor as in a air compressor?

Thanks

I see an air compressor as a device which has the capacity/ability to pump a lower volume of air within a confined space (like the cylinders n tank n hoses etc) BUT UNDER PRESSURE such that it can be stored in a receiver storage tank at a pressure much higher then atmosphere n used to power air tools or air up tires etc.

A bicycle tire pump is a compressor as it takes ambient air at atmospheric pressure and can force/transfer it under higher pressure into a CONTAINED space i.e. the tire. If youre not trying to contain the air in a storage device at a pressure above atmosphere, it merely moves air more like a fan would. But a fan (unlike a compressor) lacks the capacity TO CONTAIN the air within an enclosed speace so it can be forced into a receiver tank

NO WARRANTY ON THIS LOL Its ONLY the way I view n approach the question.

Yall take care now, simple but fun question

John T

Take care now

JT