This code will do what you want:
list1 = []
list2 = []
howmany = int(input("How many words will you write?"))
n = int(input("What will the n number be?"))
for i in range(0, howmany, 1):
word = raw_input("Write the word ")
list1 = list1 + [word]
if len(word) > n:
list2 = list2 + [word]
print list2