def get_all_words(folder_path, stopwords):
    words = []
    for file in listdir(folder_path):
        print("Analyzing ", file, "...")
        ext_name = file.split(".")[-1]
        reader = Reader.get_reader(ext_name)
        content = reader.read(join(folder_path, file))
        words = classify_content(content, stopwords)
    return words