def similar_words
      @doc ||= Nokogiri::HTML(open(PREFIX + CGI::escape(@word)))
      @similar_words = @doc.css("#relatedwords .fla a").map(&:text).reject(&:empty?)
      @similar_words
    end
def similar_words
      @doc ||= Nokogiri::HTML(open(PREFIX + CGI::escape(@word)))
      @similar_words = @doc.css("#relatedwords .fla a").map(&:text).reject(&:empty?)
      @similar_words
    end
Fetches and gives synonyms for the word
 @example
    word.similar_words
    #=> => ["answer", "inquire", "question mark", "sentence",.. ]
 @return [Array] containing similar words