They're "chosen" because they (the materials) are to be used for a specific purpose.
Mask, Punkass, Skrape. Founders of TapouT
Members of Parliament, whilst in the House of Commons, may not refer to each other in the second person, but must always use the third person. Traditionally, Members or Parliament do not refer to...
speed is the rate of motion, or equivalently the rate of change of position
by fighting and at 1