in teems of word frequency , different dictionaries use different methods to represent their word frequency. we can see form the headword below that longman dictionary of contemporary english uses the symbols s2 and w1 to show the 3000 most important words to know. s2 means that the word is one of the 2000 most common words in spoken english . w1 means the word is one is one of the 1000 most common words inwritten english. however, oxford advanced learner,s dictionary