फ़्लैशकार्ड

The words 'a' and 'an' are indefinite articles that introduce one nonspecific, countable item. Both words carry the exact same grammatical meaning. The only difference is phonetic: 'an' cushions a following vowel sound to keep spoken English flowing smoothly, while 'a' sits naturally before consonant sounds.

The architect presented an innovative proposal for the downtown library.