noun
buckwheat (plant)
Refers to the buckwheat plant (Fagopyrum esculentum) or its grain. Often used in compounds like そば粉 (buckwheat flour).
そばの花が一面に咲いている。
Buckwheat flowers are blooming all over the field.
noun
soba; buckwheat noodles
Only with reading そば
Abbreviation of 蕎麦切り (sobakiri). Refers to the thin Japanese noodles made from buckwheat flour, served hot or cold. A staple of Japanese cuisine.
See also: 蕎麦切り
昼食にざるそばを食べた。
I had cold soba noodles for lunch.
年越しそばを食べる習慣がある。
There is a custom of eating year-crossing soba noodles.
noun
Chinese-style wheat noodles
Only with reading そば
Used in names of Chinese-style noodle dishes, such as 焼きそば (yakisoba, fried noodles) or 皿そば (plate noodles). These noodles are typically made from wheat flour, not buckwheat.
焼きそばは小麦粉で作られる。
Yakisoba is made from wheat flour.
Kanji spelling, especially common in restaurant signs and formal contexts. The reading そば is a jukujikun (special kanji reading).
Katakana spelling, sometimes used for emphasis or in botanical contexts. Included as a search-only variant.
The kanji 蕎麦 are jukujikun (special kanji reading) for そば. The word itself is native Japanese, and its origin is uncertain, though it may be related to the plant's shape or cultivation.