Key Ideas
1Common vs Proper. city (no capital) vs Lahore (capital).
2Countable vs Uncountable. book→books vs water, information (no plural).
3Concrete vs Abstract. table, car (physical) vs love, freedom (idea).
4Collective. a flock of birds, a team of players.
5Determiners. Countable: many/few. Uncountable: much/little. Both: some/any.