Use Of The A And An Questions Medium
The difference between "a" and "an" lies in their usage before nouns. "A" is used before words that begin with a consonant sound, while "an" is used before words that begin with a vowel sound. The choice between "a" and "an" depends on the sound of the following word, not necessarily the actual letter it starts with. For example, we say "a cat" because "cat" starts with a consonant sound (/k/), and we say "an hour" because "hour" starts with a vowel sound (/aŹ/).