Kotoba Vocab

When it's useful

• Torn between similar words

  Check the line between adoption / adaptation / acceptance from their etymology, on one screen.

• Cramming for an exam

  Notes on the spots people actually trip on — frequent collocations, confusable spellings.

• Somewhere with no signal

  It doesn't use the network, so it works the same on a plane or underground.

What it does

Pick one on the left to switch to that screen.

Learn it so it actually sticksExplains etymology, the line between near-synonyms, and the network of derived words — not just a translation to memorize.The details that matter on exam dayNotes on the spots people actually trip on — frequent collocations, confusable spellings.No network, pay onceNo network access, no login. Pro is a one-time purchase, not a subscription.

Common friction, and how it's solved

• "I've memorized the translation, but still can't tell near-synonyms apart"

  →

  Explains the line between synonyms, how the etymology formed, and the network of derived words.

• "Making my own flashcards burns me out before I get anywhere"

  →

  Every entry ships with an explanation already written. No authoring step required.

• "A dictionary just lists definitions — it doesn't say why that's the translation"

  →

  Breaks down the etymology so you can read how the meaning came to be.

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