Translation

The Japanese word for "Hornet" is suzumebachi 雀蜂.

  • Vespinae vs. Wasp
    suzumebachi 雀蜂 refers to the subfamily Vespinae. All Vespinae are Wasps, so you can always translate suzumebachi スズメバチ to "Wasp," but some Wasps aren't Vespinae, so you can't always translate "Wasp" to suzumebachi スズメバチ.
Romaji su zu me ba chi
Hiragana
Katakana
Kanji
Meaning Sparrow Bee
School Level

Loan-word

The word "Hornet" katakanized would be hōnetto ホーネット.
Romaji hoo ne tto
Katakana
Hiragana

Further Reading

Wikipedia: Vespinae (スズメバチ)