Star in Japanese: 星 (hoshi) — writing, readings, and words

Star in Japanese is 星 (hoshi), a character made of "sun" and "life." The celestial body and the celebrity star are called by different words in Japanese: 星 stays only for the sky, while for celebrities the loanword スター "sutā" is used. A shooting star also has two names: the colloquial 流れ星 and the literary 流星 — same meaning, the difference is only in register.

Star in Japanese: 星 (hoshi) — writing, readings, and words

In English, "star" works equally for a constellation and a singer on a poster. Japanese didn't inherit that metaphor: the sky and fame are called by two different words here, and you can't mix them up.

One character 星, two readings: "hoshi" and "sei"

星 — значение: star, celestial body — онъёми: セイ、ショウ — кунъёми: ほし、-ぼし — 9 штрих(ов).

日+生 — what you can see in the character's composition

The character is composed of 日 "sun, luminary" and 生 "to be born, to live" — in ancient times stars were imagined as living fires in the sky. The kun reading "hoshi" is a standalone word and part of native compounds: 星空 "starry sky," 星占い "astrology." The on reading "sei" appears in Sino-Japanese terms: 星座 "seiza" — constellation or zodiac sign, 衛星 "eisei" — satellite. The two readings are not interchangeable: saying "sei" instead of "hoshi" for a star in the sky is a mistake.

星 and スター: why "star" has two different words

JapaneseReadingTranslation
星hoshi · hoshiStar
星座seiza · seizaConstellation, zodiac sign
流れ星nagareboshi · nagareboshiShooting star (colloquial variant, literally "flowing star")
流星ryūsei · ryūseiShooting star, meteor (same phenomenon, but with a literary, scientific reading)
火星kasei · kaseiMars (literally "fire star")
星空hoshizora · hoshizoraStarry sky
スターsutā · sutāCelebrity star (loanword from English; the word 星 is not used in this sense)

流れ星 and 流星 — the same thing with different readings

For a meteor in the sky, a Japanese speaker might say 流れ星 "nagareboshi" in everyday conversation and 流星 "ryūsei" in the news or a scientific article: same meaning, different register. But for an artist, only スター is used, never 星 — unlike English, where "star" covers both the sky and fame, Japanese has completely separated them. As for Tanabata — the festival where two star lovers meet — here it's enough to know that both are called 星.

Write 星 yourself

Trace the character 星 along the guides — the system will evaluate each stroke.

FAQ

How do you say "star" in Japanese?
星 (hoshi) — for a celestial body. For a celebrity, this word is not used; there is a separate word スター.
Why is a celebrity star called スター and not 星?
These are different words, not different meanings of one. 星 is reserved only for celestial bodies; for celebrities, the loanword from English スター "sutā" was adopted.
How does 流れ星 differ from 流星 if both mean "shooting star"?
Same meaning, different register. 流れ星 "nagareboshi" is the everyday colloquial variant, 流星 "ryūsei" is the literary, scientific name for the same phenomenon.
What does 火星 mean and what do stars have to do with it?
火星 is Mars, literally "fire star": an old Sino-Japanese name for the planet based on its color, given long before telescopes.
How are stars connected to the Tanabata festival?
Tanabata is a festival about the once-a-year meeting of two star lovers. A detailed story about the festival itself is on a separate page; here we stay with the words.

Sources

Updated: 2026-09-09

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