from collections import Counter


def most_common(words, n=10):
    """
    Returnes the most common words in a document

    Args:
        words (list): list of words in a document
        n (int, optional): Top n common words. Defaults to 10.

    Returns:
        list: list of Top n common terms
    """
    bow = Counter(words)
    ncommon = bow.most_common(n)
    return(ncommon)