Deadlocks are a type of impasse that occurs when two or more parties are unable to reach an agreement or decision. There are several related terms that can be used to describe similar situations. For instance, a stalemate refers to a situation in which progress is impossible due to opposing forces or equal strength. A gridlock occurs when traffic is blocked on multiple lanes, causing a standstill. A logjam describes a blockage in the flow of something, such as goods in a supply chain or ideas during a brainstorming session. While these terms have slightly different connotations, they all convey the sense of being stuck or unable to move forward.