What is the difference between Amount and Number? How to distinguish between Amount and Number? Let's see the following examples.

✗ I've saved a considerable number of money.

 ✓ I've saved a considerable amount of money.

 ✗ I've sold an amount of cars.

 ✓ I've sold a number of cars.

Amount: is used with uncountable nouns.

Number: is used with countable nouns.