Chinese vocabulary: CC-CEDICT, published by MDBG and maintained by community contributors.
Source: https://www.mdbg.net/chinese/dictionary?page=cc-cedict
License: Creative Commons Attribution-ShareAlike 4.0 International.
https://creativecommons.org/licenses/by-sa/4.0/
This selected and reformatted Chinese dataset is distributed under that same license.
Changes: 10,000 unique simplified entries, removed cross-reference-only senses, added ids,
seed beginner ordering followed by Jieba frequencies. Not a Duolingo or HSK word list.
Frequency ordering: fxsjy/jieba (MIT); license retained in artwork/languages/JIEBA-LICENSE.
Spanish vocabulary: original 99-word starter selection and English glosses by this project,
followed by entries selected from WikDict's Spanish-English dictionary, based on Wiktionary
via DBnary. Source: https://download.wikdict.com/dictionaries/tei/recommended/spa-eng.tei
WikDict source edition: 2025.11.21. License: Creative Commons Attribution-ShareAlike 3.0 Unported.
https://creativecommons.org/licenses/by-sa/3.0/
The selected and reformatted Spanish dataset is distributed under that same license.
Changes: 10,000 unique single-word entries, short English translations, stable ids,
original beginner ordering followed by Spanish word-frequency order. Common function-word
glosses were clarified. Not an official Duolingo course.
Frequency ordering: wordfreq 3.1.1; only ordering scores were used, not copied dictionary text.