The term "lead altar" can be replaced with a number of synonyms. A few options include "frontispiece," "predella," or "ancon." A frontispiece is a decorative structure that typically frames a picture or inscription. A predella is a decorative panel that is located beneath the central panel of an altarpiece and typically features smaller images or scenes. An ancon is a decorative panel that is often located above an altar, featuring an image of a saint or other religious figure. These synonyms can be used to add descriptive language and variety to religious artwork or discussions of church architecture.