The term 'make permanent' can be expressed in two words: ETCH and lockin. ETCH is a four-letter word meaning to carve or engrave a design, text, or pattern into a hard surface. Lockin is a six-letter word meaning to secure something in place so that it cannot be moved or removed. Together, these two words describe the process of making something permanent, such as engraving a design onto a metal surface and then securing it in place.