The noun "oil" can be both countable and uncountable.
Meaning: a thick liquid, such as the dark liquid from underground that's used to make fuel, or a thick liquid that's used for cooking food
Example sentence: Many countries in the Middle East make a lot of money from exporting oil.
Meaning: a particular type of oil
Example sentence: My daughter's a vegetarian, so we have lots of different vegetable oils in our kitchen cupboards.
Test your understanding:
- How many vegetable oils did they sell at the supermarket?
- How much vegetable oil did you buy at the supermarket?