A number of individuals or things considered or classed together because of similarities, A column in the periodic table of the elements, adjective_ Of, relating to, constituting, or being a member of a group, transitive verb_ To form a group of; to arrange or combine in a group or in groups, often with reference to mutual relation and the best effect; to form an assemblage of, intransitive verb_ To place or arrange in a group, To belong to or form a group