What does it mean if two ideas are "dissonant"?

When two ideas are described as "dissonant," it signifies that they are conflicting or disagreeing with one another. The term "dissonance" is often used in various contexts, including music, psychology, and communication, to indicate a lack of harmony or a clash between different thoughts, feelings, or perspectives. In this case, the use of "dissonant" directly points to the presence of tension or opposition between the ideas, making them incompatible or at odds. This concept contrasts with agreement, complementarity, or insignificance associated with the other choices.