Definitions for "Abstract noun"
A noun that expresses qualities, concepts, and emotions that cannot be perceived through the senses: truth, justice, fear, future.
an idea, emotion, feeling, or quality that cannot be detected by the five senses
a noun that denotes something viewed as a nonmaterial referent
Keywords:  mass, things, held, word, identifies
a word which identifies things which have no mass, nor can be seen or held