Altar carpet is a term used to describe a piece of fabric that is used to cover the altar in a place of worship. However, there are many other terms that can be used to describe this type of fabric. For example, some people refer to it as an altar cloth, which is a more general term that can be used to describe any type of fabric that is used to cover the altar. Other synonyms for altar carpet include altar runner, altar drape, altar veil, and altar tapestry. Each of these words can be used interchangeably depending on the context and the preferences of the person using them.