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.
Cloak vs Cape. The difference between cloak and cape has to do with the appearance of each clothe and the purpose for which we wear the clothe. A cape is more worn for fashion while a cloak is worn to protect the wearer from the elements such as rain and dirt. A cloak is a dress that is mostly one piece and covers the top portion of a person completely.