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
A caddie is a swing coach, a mental coach, a voice of reason and persuasion and the person that makes sure, if you go on tilt, that things can smooth over so you can finish your round and not post some absurdly high number.