Abstract
An abstract word is a word that represents an intellectual concept, rather than a "concrete" reality. For instance a "house" is a concrete term for a structure designed for living in, while a "home" is considered an abstract term because it denotes a personal living space that contains things such as family, comfort, and memories. Likewise, "animal" is concrete term for a living creature while in the abstract a "pet" is a domesticated animal that provides companionship, comfort, and fun.