a word or expression used in a figurative sense : figure of speech; a common or overused theme or device : cliché; a phrase or verse added as an embellishment or interpolation to the sung parts of the Mass in the Middle Ages… See the full definition| www.merriam-webster.com
any member of a class of words that typically can be combined with determiners to serve as the subject of a verb, can be interpreted as singular or plural, can be replaced with a pronoun, and refer to an entity, quality, state, action, or concept… See the full definition| www.merriam-webster.com