Pungency

Pungency is the condition of having a strong, sharp smell or taste that is often so strong that it is unpleasant.Pungency is the technical term used by scientists to refer to the characteristic of food commonly referred to as spiciness or hotness and sometimes heat, which is found in foods such as chili peppers.

The term piquancy /ˈpiːkənsi/ is sometimes applied to foods with a lower degree of pungency that are "agreeably stimulating to the palate." Examples of piquant food include mustard and some strongly flavored tomatoes, as well as most foods that might be called "well-spiced."

The terms "pungent" ⁱ/pʌndʒənt/ and "pungency" are rarely used in colloquial speech but are preferred by scientists as they eliminate the potential ambiguity arising from use of the words "hot" and "spicy", which can also refer to temperature and the presence of spices, respectively.

For instance, a pumpkin pie can be both hot (out of the oven) and spicy (due to the common inclusion of spices such as cinnamon, nutmeg, allspice, mace, and cloves), but it is not pungent. (A food critic may nevertheless use the word "piquant" to describe such a pie, especially if it is exceptionally well-seasoned.) Conversely, pure capsaicin is pungent, yet it is not naturally accompanied by a hot temperature or spices.

...
Wikipedia