import re


def is_acronym(word):
    """Checks is the word is all caps (acronym) and/or contain numbers

    Return:
    True if the word is all caps and/or contain numbers, e.g., ABCDE, AB12C
    False if the word contains lower case letters, e.g., abcde, ABCde, abcDE,
        abCDe, abc12, ab12c
    """
    return re.match(r"\b[A-Z0-9]{2,}\b", word) is not None