| fit_aoa | Fit age of acquisition estimates for Wordbank data |
| fit_vocab_quantiles | Fit quantiles to vocabulary sizes using quantile regression |
| get_administration_data | Get the Wordbank by-administration data |
| get_crossling_data | Get item-by-age summary statistics for items across languages |
| get_crossling_items | Get the uni_lemmas available in Wordbank |
| get_instruments | Get the Wordbank instruments |
| get_instrument_data | Get the Wordbank administration-by-item data |
| get_item_data | Get the Wordbank by-item data |
| get_sources | Get the Wordbank data sources |
| summarise_items | Get item-by-age summary statistics |