Difference between Sour and Acidity

Sour

Part of speech: noun

Definition: the sensation of a sour taste a drink made with whiskey, lemon or lime juice and sugar

Part of speech: verb

Definition: To make or become sour To become disenchanted

Part of speech: adjective

Definition: having an acid, sharp or tangy taste made rancid by fermentation etc tasting or smelling rancid peevish or bad-tempered excessively acid and thus infertile containing excess sulphur

Example sentence: Most men remember obligations, but are not often likely to be grateful; the proud are made sour by the remembrance and the vain silent.

Acidity

Part of speech: noun

Definition: The quality or state of being acidThe quality of sour; sourness; tartness; sharpness to the taste, as in the acidity of lemon juice.Excessive acid quality, as in gastric secretions.