Interesting! Agurk has a point as well. All I know and was saying that in my field (engineering thermodynamics... in some sense the field on this topic), peop

Interesting! Agurk has a point as well. All I know and was saying that in my field (engineering thermodynamics... in some sense the field on this topic), people feel very strongly about "compressor -> compressible fluid" and "pump -> incompressible fluid" (and the "fan" stuff).