HAKOBUNE Vocabulary content attribution

Word-list ordering uses NGSL 1.2 and companion lists from the New General
Service List Project (CC BY-SA 4.0):
https://www.newgeneralservicelist.com/word-lists

Japanese dictionary data is derived from EJDict (CC0):
https://github.com/kujirahand/EJDict

Bilingual example material is derived from the Tanaka/EDRDG sentence corpus as
distributed by Tatoeba. Tatoeba sentence data is available under CC BY 2.0;
individual sentence attribution and current download information are available
from:
https://tatoeba.org/en/downloads
https://ftp.edrdg.org/pub/Nihongo/00INDEX.html

Lexical validation uses Princeton WordNet and Open Multilingual Wordnet data.

Part of the bilingual example sentences, Japanese meanings and secondary
meanings were written by HAKOBUNE in the 2026-11-08 vocabulary review (original
sentences, not taken from Tatoeba, dictionaries or commercial word books).
例文の一部と日本語の意味は、HAKOBUNE が書いたものです（2026-11-08 の見直し）。

HAKOBUNE-specific course selection, IDs, learning metadata, distractor mapping,
cloze transformation and audio production were prepared for HAKOBUNE Learning.

The TOEIC Workplace & Service and TOEIC Documents & Precision additions use
original HAKOBUNE Japanese meanings, bilingual example sentences, cloze prompts
and curriculum classifications. Public IIBC pages are used only to understand
the public test format and coverage scale; no official or commercial TOEIC word
list, paid material, or proprietary test question is reproduced.

The TOEFL Master Pool combines reusable HAKOBUNE vocabulary with coverage checks
against the CC-licensed NAWL 1.2 and Academic Keyword List. Its 522 additions use
original HAKOBUNE Japanese meanings, bilingual examples, cloze prompts,
distractors and course classifications. Public ETS pages inform only the current
test structure and topic coverage; 4,970 is a HAKOBUNE learning-pool count, not
an ETS official required-vocabulary count.

The Business English Master Pool uses Business Service List 1.2 (CC BY-SA 4.0)
as candidate and frequency evidence, then applies HAKOBUNE's practical-workplace
domain filter. Its 129 new single-word units and 192 professional expressions
use original HAKOBUNE Japanese meanings, bilingual examples, cloze prompts,
distractors and course classifications. Broad news, conflict vocabulary and
non-standalone word fragments are excluded from the learner-facing curriculum.
The resulting 1,458 items are a HAKOBUNE learning-pool count, not an official
required-vocabulary count.