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Content and licences

Updated 8 October 2026. Spanish Hub includes 10,000 distinct vocabulary entries and 24 bilingual grammar lessons . Entries include words and a small number of common fixed expressions. The same complete vocabulary collection powers both flashcard directions and vocabulary exercises.

English translations

Each Spanish headword has a prominent English meaning. Every example has an English translation. Grammar titles, explanations, forms, examples, mistakes and answer feedback are bilingual. Menus and controls are English.

Vocabulary sources

66 core entries were authored for this edition. 9,934 entries were adapted from GENERAL NEURO Language-Learning-decks , Spanish source revision cc57ec2dd77d . Copyright © 2025 GENERAL NEURO. The repository is published under the MIT licence . Its learning content was generated and cleaned using Gemini.

The upstream selection uses wordfreq corpus data by Robyn Speer and Luminoso Technologies, Inc. under CC BY-SA 4.0. See the upstream attribution notice and wordfreq citation . Eligible headwords were selected in ascending source frequency rank, with core function words added. This is a frequency-prioritized collection, not an exact official ranking of the 10,000 most popular Spanish words.

Adaptation and review

Changes include spelling checks, removing duplicated accent variants and malformed entries, normalizing word classes and study levels, adding stable IDs, including noun articles where directly evidenced, and converting to CSV. Spelling was checked using the LibreOffice Spanish spelling dictionary and nspell as development tools; those tools and dictionary files are not included in this package. A spelling check does not establish the correctness of a definition or sentence.

Noun articles are included when directly evidenced in the source example or supplied in a reviewed core entry. Some nouns are shown without an article; this does not imply that they have no gender. Ambiguous multi-gender nouns are not forced into one gender. Plurals and complete conjugation tables are not systematically supplied. For example, el agua means water and remains grammatically feminine despite its singular article.

CEFR labels are approximate source estimates: A1–A2 are grouped as Beginner, B1–B2 as Intermediate and C1–C2 as Advanced. Regional vocabulary and grammar vary across Spanish-speaking countries. This collection is not an official examination syllabus.

Grammar

The 24 lessons are original bilingual teaching summaries, with original examples and exercises. General reference resources include the Instituto Cervantes grammar inventory and RAE grammar . No affiliation or endorsement is implied.

Quality limits

Automated checks cover every entry for required English meanings, Spanish examples, translated examples, unique IDs, data consistency and quiz generation. Targeted linguistic corrections have been made, but the entire collection has not had an independent line-by-line review by a Spanish teacher. Some generated translations, word classes or example choices may still need correction.

Reuse

The adapted vocabulary compilation in data/words.csv is distributed under CC BY-SA 4.0 . Preserve these notices and share vocabulary adaptations under the same licence. The full licence text and upstream MIT notice are included. This notice applies to the vocabulary compilation, not Arynox branding or application code.

Privacy and pronunciation

Progress stays in this browser, using a Spanish-specific storage key. No accounts, database, payments or teacher dashboards are included. Pronunciation uses an installed Spanish text-to-speech voice.