also: せいようかぼちゃ
buttercup squash; Cucurbita maxima
Refers specifically to the Western pumpkin/squash species Cucurbita maxima, as opposed to Japanese pumpkin (Cucurbita moschata). Used in culinary and agricultural contexts.
Western pumpkin is sweeter than Japanese pumpkin.
This dish tastes great when you use buttercup squash.
Refers to the Japanese pumpkin (Cucurbita moschata), which is less sweet and has a different texture compared to 西洋カボチャ.
Standard mixed kanji-katakana spelling.
Full kanji spelling; less common but still used, especially in botanical or formal contexts.
Compound of 西洋 (Western) and カボチャ (pumpkin/squash), distinguishing this species from the native Japanese variety.