Question for people who know everything about the periodic table?

Okay.. if an element is not in the METAL OR NON METAL CATEGORY.. then what category does it fall under when naming an ionic compound? when naming compounds it has to be either a metal or non metal right? and there are more categorys besides metal and non metal.. such as: semi conductors, inert ges, ect.. so would these fall under metal or non metal when naming compounds?