Discernibility is the ability to perceive or recognize differences between objects or ideas. Possible synonyms for discernibility include distinguishability, visibility, clarity, differentiation, separation, and contrast. These words all suggest the ability to discern or differentiate between two or more things. For example, a clear distinction between two options might be said to represent a high level of discernibility. Similarly, the visibility of a particular feature might depend on its level of discernibility. Ultimately, the choice of synonym will depend on the context in which the word is used, as well as the specific connotations and nuances that are being conveyed.