1 Fundamentals of Ionic Bonds Everything in the universe is made up of atoms that join together to form more complex chemical compounds. 2  There are several different ways that atoms can join together, inclâ¦. 3  The Periodic Table of Elements Life is sustained by a number of chemical elements.
specialize - devote oneself to a special area of work; She specializes in honey bees; This baker specializes in French bread specialise work - exert oneself by doing mental or physical work for a purpose or out of necessity; I will work hard to improve my grades; she worked hard for better living conditions for the poor
1. generalization is the result of taking the union of two or more  lower level entity sets to produce a higher level entity sets.   specialization is the results of taking subsets of a higher level  entity set to form a lower level entity sets.   2.