What is another word for coal-and-ice?
Pronunciation: [kˈə͡ʊlandˈa͡ɪs] (IPA) 
"Coal-and-ice" is an idiomatic expression used to describe contradictory or incompatible things or situations. Synonyms for this phrase include "oil and water," "chalk and cheese," "fire and water," and "day and night." These expressions highlight the stark differences between two conflicting entities that cannot coexist, blend, or work harmoniously together. They are often used to express the incompatibility of personalities, beliefs, or actions in various contexts, such as relationships, politics, business, culture, or religion. The use of these synonyms emphasizes the irreconcilable nature of the contrasting elements and underscores the need for compromise, mediation, or separation to avoid conflict or failure.
