def get_fren_word(category_data):
    """
    Takes the category_data list and appends the values corresponding to the 
    "french_word" key, to a new list called fren_words.

    Params:
        1) category_data - list containing all the information that corresponds to the user's selected level and category

    Examples:
        fren_words = get_fren_word(category_data)
        > fren_words = ['chien','chat'...]
    """    

    fren_words = []
    for data in category_data:
        fren_word = data["french_word"]
        fren_words.append(fren_word)
    
    return fren_words