class_docstr: A class to process a collection of words from either a corpus or a list of related words.
  This class provides various filtering methods to narrow down the collection based on specific criteria.
  
  Args:
      words (Corpus | RelatedWords): The corpus or list of related words to be processed.
docstr: Get word from corpus at given index.
docstr_tok: ["Get","word","from","corpus","at","given","index","."]
code: def __getitem__(self, index: int) -> str:
      """Get word from corpus at given index."""
      return self.words[index]
  
file_path: evals/evals/registry/data/word_association/corpus_tools/processor.py
imports: from collections import namedtuple
  from typing import Iterator, List, Union
  from corpus import Corpus, NltkCorpus
  from related_words import RelatedWords
label_desc: Use image node_id 9 for calling the WordCollectionProcessor obj's underlying member method code with example usage: obj.__getitem__(index) and returns: self