def print_topic_words(topic_model):
    """ Print words corresponding to topic modelling

    Parameters
    ----------
    topic_model : :obj:`gensim model`
            topic model

    Returns
    -------
        None
    """
    for idx, topic in topic_model.print_topics(-1):
        print('Topic: {} \n Words: {}'.format(idx, topic))
    return None
