In the case of the motor it is the rotor and the stator and for the pump it is the impeller and the volute (or diffuser). Of course the friction produced by bearings and other mechanical components (seals, stuffing box, etc) also affect pump efficiency, but the impeller and volute have the greatest influence. Lets start our investigation of centrifugal pump efficiency with the impeller.
The differences are minor: 1  A blazer refers to a sportcoat that is made of navy wool, with brass buttons. 2  A suit jacket is the jacket part of a suit. 3  A sport coat is a jacket, cut like a suit jacket or blazer, that doesn't have an accompanying pair of pants - it's a standalone jacket.
Length Differences. One of the easiest ways to distinguish a cape from a cloak is by looking at the lengths. In general, capes are much shorter than cloaks. The length of a cape is usually anywhere from the top of the torso to the hips. Rarely will a cape fall past the thighs. On the other hand, the shortest cloak falls below the knees. Many cloaks are calf-length at minimum, and some are floor-length.