4 words in this vocabulary list
noun a noun is a word that represents a person, place, thing, or idea. In this case, 'acidity' is a noun that refers to the level of acid in a substance or the quality of being sour or acidic.
noun a layer of soil parallel to the soil surface, with distinct characteristics such as color, texture, and composition
noun the quality or state of being acidic
noun a word that functions as the name of something, such as a person, place, or thing