def remove_words(list1, removewords):
    
    for word in list(list1):
        if word in removewords:
            list1.remove(word)
    return list1  
def is_not_prime(n):
    import math
    
    result = False
    for i in range(2,int(math.sqrt(n)) + 1):
        if n % i == 0:
            result = True
    return result