如何打印word的所有lemma_names而不重复NLTK中的同义词和pos_tag？

import nltk
from nltk.corpus import wordnet as wn

def get_lemma_names(word):
    lemma_names = set()
    synsets = wn.synsets(word)
    for synset in synsets:
        for lemma in synset.lemmas():
            lemma_names.add(lemma.name())
    return lemma_names

def get_pos_tag(word):
    synsets = wn.synsets(word)
    if synsets:
        return synsets[0].pos()
    else:
        return None

def print_unique_lemma_names(word):
    lemma_names = get_lemma_names(word)
    pos_tag = get_pos_tag(word)
    print("Word: ", word)
    print("POS Tag: ", pos_tag)
    print("Unique Lemma Names: ", lemma_names)

print_unique_lemma_names("word")