Sentence:  A <WSD>Noun</WSD> is a word which serves to name and distinguish some thing; [...]. There are two sorts of <WSD>nouns</WSD>; one is called a <WSD>noun</WSD> substantive, and the other a <WSD>noun</WSD> adjective. 
Meaning of the word marked with <WSD> tags:  Either a word that can be used to refer to a person, animal, place, thing, phenomenon, substance, quality or idea, or a word that modifies or describes a previous word or its referent; a substantive or adjective, sometimes also including other parts of speech such as numeral or pronoun.