get_collocations        Get collocations for word in corpus
get_concordance         Retrieve Concordance for Words in Documents
get_dispersion          Dispersion of tokens in a text
get_document_corpus     Get Document Corpus
get_document_frequencies
                        Retrieve Token Frequencies in Documents
get_metadata            Get National Library Metadata for identifiers
get_ngram_from_books    Get Ngram Count per Year for National Library
                        Book Collection
get_ngram_from_newspapers
                        Get Ngram Count per Year for National Library
                        Newspaper Collection
get_reference_words     Retrieve Reference Words Count and Relative
                        Frequency
get_urn_frequencies     Get word count frequencies for a list of URNs
                        or dhlabids
ngram                   Function to get and convert NGRAM
