Licences
Abece's clues, examples and audio are our own work. To choose which words go into the rings, we rank words by how often they are used, based on the open data below. We thank the people who build and share it.
Content sources
Leipzig Corpora Collection
Word frequency data: Leipzig Corpora Collection (wortschatz-leipzig.de), Universität Leipzig, Sächsische Akademie der Wissenschaften zu Leipzig (SAW Leipzig) and InfAI. Packages used: deu_news_2025_1M and deu-de_web_2021_1M.
Licence: Creative Commons Attribution 4.0 International (CC BY 4.0), per the project's terms of usage: "The text corpora offered for download are made available under the Creative Commons licence CC BY."
Changes: we used the corpora to rank words by frequency, tag parts of speech and extract noun articles and plurals. The corpora themselves are not redistributed.
Reference: D. Goldhahn, T. Eckart and U. Quasthoff (2012): Building Large Monolingual Dictionaries at the Leipzig Corpora Collection: From 100 to 200 Languages. In: Proceedings of the 8th International Language Resources and Evaluation Conference (LREC'12).
Google Books Ngram Corpus, version 3
Word frequency validation data: Google Books Ngram Corpus, version 3 (version identifier 20200217), German subcorpus, via the cleaned frequency lists at github.com/orgtre/google-books-ngram-frequency.
Licence: Creative Commons Attribution 3.0 Unported (CC BY 3.0), per the official dataset page: "This compilation is licensed under a Creative Commons Attribution 3.0 Unported License."
Changes: we used the lists only to cross-check our frequency ranking. They are not redistributed.