TYPICAL ERROR A smaller amount of people attended than the organisers had hoped for.
CORRECTION A smaller number of people attended than the organisers had hoped for.
EXPLANATION It is common to hear people use amount when they really mean number. Amount refers to a quantity (e.g. a quantity of flour, which is not made up of separate, individual countable items or pieces). By contrast, number refers to countable, separate items. Hence, we say that a smaller amount of water is required by certain plants than others or that a particular bucket holds a greater amount of water than another. By contrast, we might say that a greater number of people watched the Olympic Games than ever before.
There are many such pairs of words that are commonly confused (Indeed, a great number!)
For each pair of frequently confused words, drag the correct word into the appropriate sentence.