Avoiding proper nouns when doing NLP for fictional works

While doing NLP vector embeddings for media, how do I handle and get rid of proper nouns in the work? tf-idf is also a useless metric to use, right, Since the highest tf-idf words will be words exclusive to the media that aren't overall useful (e.g. "Jedi" will have a high tf-idf score for Star Wars but is completely useless since no other media uses it). The opposite side of this is also a problem: if a character's name is …

datascience embeddings media nlp tf-idf vector vector embeddings words work