Which kind of noun is world?

Answer 1

The noun world is a singular, common noun, a word for a thing.

The noun 'world' is an abstract noun as a word for the concerns of the earth and human affairs; a class of persons sharing a common interest or activity; the scene of one's life and action (your own world); a word for a concept.

The noun 'world' is a concrete noun as a word for the planet Earth, together with all of its places and peoples; a particular region or group of countries; another planet like the Earth; a word for a physical thing or a physical place.