Solution:
A noun is a term for an object, person, animal, place, quality, concept, idea, or activity. A countable noun is one used with the indefinite article in the plural. A book is thus a countable noun as well.
A book is both a common noun and a :
A noun is a term for an object, person, animal, place, quality, concept, idea, or activity. A countable noun is one used with the indefinite article in the plural. A book is thus a countable noun as well.