kompreno

Sources and licenses

Kompreno's word levels, dictionary forms, meanings and example sentences are built with the openly licensed resources below. We thank their authors and contributors.

CEFR-J Wordlist

  • Used for: Levels of English words (A1–B2)
  • License: Free for research and commercial use with citation
  • Attribution: CEFR-J Wordlist Version 1.6. Compiled by Yukio Tono, Tokyo University of Foreign Studies. Retrieved from https://www.cefr-j.org/download.html on 3 October 2026.
  • Website: https://www.cefr-j.org/download.html

Octanove Vocabulary Profile C1/C2

  • Used for: Levels of English words (C1)
  • License: CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0/)
  • Attribution: Octanove Labs, Octanove Vocabulary Profile C1/C2 (olp-en-cefrj).
  • Website: https://github.com/openlanguageprofiles/olp-en-cefrj

JLPT vocabulary lists

  • Used for: Levels of Japanese words
  • License: CC BY (tanos.co.uk); CC BY-SA 4.0 (yomitan-jlpt-vocab, https://creativecommons.org/licenses/by-sa/4.0/)
  • Attribution: JLPT vocabulary lists by Jonathan Waller, tanos.co.uk; compiled by Stephen Kraus (yomitan-jlpt-vocab).
  • Website: https://www.tanos.co.uk/jlpt/

JMdict

  • Used for: Japanese dictionary forms, meanings and common-word markers
  • License: CC BY-SA 4.0, EDRDG licence (https://www.edrdg.org/edrdg/licence.html)
  • Attribution: This product uses the JMdict dictionary files. These files are the property of the Electronic Dictionary Research and Development Group, and are used in conformance with the Group's licence.
  • Website: https://www.edrdg.org/jmdict/j_jmdict.html

HSK 3.0 word list

  • Used for: Levels of Chinese words
  • License: Level facts of the official HSK 3.0 standard (GF 0025-2021)
  • Attribution: HSK 3.0 levels as compiled by Ivan Kravets (ivankra/hsk30).
  • Website: https://github.com/ivankra/hsk30

CC-CEDICT

  • Used for: Meanings of Chinese words
  • License: CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0/)
  • Attribution: CC-CEDICT, MDBG and the CC-CEDICT contributors.
  • Website: https://cc-cedict.org/

한국어 학습용 어휘 목록

  • Used for: Levels of Korean words and Korean learner vocabulary
  • License: Korea Open Government License Type 1 (https://www.kogl.or.kr/info/licenseType1.do)
  • Attribution: 국립국어원, 한국어 학습용 어휘 목록(2003).
  • Website: https://www.korean.go.kr/

Wiktionary (via Kaikki.org)

  • Used for: Dictionary forms, meanings and translations in all languages
  • License: CC BY-SA 4.0 and GFDL (https://creativecommons.org/licenses/by-sa/4.0/)
  • Attribution: Wiktionary contributors; machine-readable extraction by Tatu Ylonen, Kaikki.org (wiktextract).
  • Website: https://kaikki.org/

FrequencyWords

  • Used for: Spoken word frequencies
  • License: CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0/)
  • Attribution: Hermit Dave, FrequencyWords (2018), based on OpenSubtitles (http://www.opensubtitles.org/).
  • Website: https://github.com/hermitdave/FrequencyWords

NorthEuraLex, WOLD, Concepticon

  • Used for: Checklist of basic concepts for the core vocabulary
  • License: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/)
  • Attribution: Dellert, Johannes et al. 2020. NorthEuraLex 0.9; Haspelmath, Martin & Uri Tadmor (eds.) 2009. World Loanword Database; List, Johann-Mattis et al. Concepticon.
  • Website: https://concepticon.clld.org/

Tatoeba

  • Used for: Example sentences
  • License: CC BY 2.0 FR (https://creativecommons.org/licenses/by/2.0/fr/) and CC0 1.0
  • Attribution: Example sentences from Tatoeba (https://tatoeba.org) by their respective contributors.
  • Website: https://tatoeba.org/

Leipzig Corpora Collection

  • Used for: Example sentences
  • License: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/)
  • Attribution: Leipzig Corpora Collection, Universität Leipzig (https://wortschatz.uni-leipzig.de).
  • Website: https://wortschatz.uni-leipzig.de/