Lexical literal use is a word applied according to an established assignment among speakers of the language, as “asad” for the animal lion.
Religious literal use follows an established religious-technical sense, such as ṣalāh for ritual prayer. Customary literal use follows a conventional sense within a general or specialized community.
This classification shows why literal usage is not judged against one timeless dictionary entry alone. We must first ask which convention establishes the relevant meaning, then classify the occurrence accordingly.