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
Beck, played by Elijah Wood, is a program who joined forces with Tron in order to bring Clu down. He took on the costume of Tron in order to act as the new Tron. Beck works at Able's garage, and is friends with Zed and Marah. He is a skilled fighter and mechanic. Beck is currently the main character in Tron Uprising.