This Spanish Easy Review grammar quiz deals with the importance of accent marks. In English we have many words that are spelled the same but have different meanings such as 'row'. A row could mean the lining up of things such as a row of chairs. Row could also be an action verb such as to row a boat. Words that are spelled the same but have different meanings are known as homonyms. The only way we can tell if a word has a different meaning is how that word is used in the context of a sentence.
Spanish also has many words that are spelled the same but they each possess a slight difference over the other.