Difference between Mustiness and Must

Mustiness

Part of speech: noun

Definition: The characteristic of being musty.

Must

Part of speech: verb

Definition: To do with certainty; .To do as a requirement; .

Part of speech: noun

Definition: Something that is mandatory or required.Something that exhibits the property of being stale or musty.Fruit juice that will ferment or has fermented, usually grapes.A time during which male elephants exhibit increased levels of sexual activity and aggressiveness (also musth).

Example sentence: In order to carry a positive action we must develop here a positive vision.