Jairo and his family moved to the US last year from Spain. Jairo is having trouble with his English pronunciation. He does well with the decodable words, or words that are phonetically regular and can be blended or 'sounded out,' but struggles to remember the words that are irregular and have to be learned as whole words. His teacher, Mrs. Calihan, recommends that he practice this second category of words at home with his family. What are these words called