The metre, kilogram, second and ampere are called fundamental units or base units. From these units we can derive some more units that are called derived units. These units are built up step by step from the base units and usually given a distinct name.
cadre [(kad-ree, kah-dray)] An elite or select group that forms the core of an organization and is capable of training new members. The New Dictionary of Cultural Literacy, Third Edition
Steve Williams (caddy) Steve Williams, MNZM (born 29 December 1963) is a New Zealander who has served as a caddy for several top professional golfers, most recently with Adam Scott. Williams is best known for having served as Tiger Woods' caddy from 1999 to 2011. Woods was the top-ranked golfer in the world for much of Williams' tenure as his caddy.