In selecting 80 target words for this study, 2,000 most frequent words from the General Service List were taken (Nation, 2008, p.163-171). Firstly, the words were alphabetically arranged. Then the part of speech of each word was identified and only the words with two classes or more were kept. However, the number of homonyms and homographs was found not to be roportional (298 homonyms, 57 homographs). Hence, every fifth of the homonyms were chosen and then only 40 homonyms and 40 homographs were randomly selected. Among the 80 words, 59 have two parts of speech (mostly nouns and verbs), sixteen carry three grammatical functions, four carry four, and only one carries five. None of the target words function as pronouns and conjunctions. Thirty homonyms and thirty homographs were used in the training, while ten words of each group were used in the pre-test and post-test.