Calling variable defined inside one function from another function. PYTHON 3.2.3

if I have this:

def oneFunction(lists):
     category=random.choice(list(lists.keys()))
     word=random.choice(lists[category])
 
 def anotherFunction():
     for letter in word:              #problem is here
         print("_",end=" ")
 

I have previously defined lists, so oneFunction(lists) works perfectly.

My problem is calling word in line 6. I have tried to define word outside the first function with the same word=random.choice(lists[category]) definition, but that makes word always the same, even if I call oneFunction(lists).

I want to be able to, every time I call the first function and then the second, have a different word.

Can I do this without defining that word outside the oneFunction(lists)?

---