Accents may look strange to anyone whose native language doesn’t have any, but they are extremely important in Spanish. Leaving off the accent on a word is a spelling mistake, and may cause confusion.
The Spanish acute accent* (á, é, í, ó, ú) serves two purposes:
1. It indicates that the normal rules of word stress are being overridden. The following table lists the normal rules and has examples of words that follow them as well as words that need accents because they break the rules.
Words that end in a consonant other than N and S have stress on the last syllable.