The noun "aid" can be both countable and uncountable.
Meaning: money or help given to those who need it
Example sentence: Japan gives aid to many developing countries.
Meaning: something that helps you to do something
Example sentence: The Internet can be a useful aid for learning English.
Test your understanding:
- Don't you think the government should give aid to poor students?
- A computer is the best learning aid you can give to poor students.