ばね・発条・弾機・撥条bane[1]atamadaka (head-high)

1. nounspring (device)
   そのばね１個こで車くるまの全ぜん重量じゅうりょうを支ささえている。↗

   That one spring carries the whole weight of the car.
2. nounspring (in one's legs); bounce
3. nounspringboard; impetus

• SynonymスプリングNeutralLoanword for a (coil) spring; it also means the spring season or a light overcoat. For bounce or impetus in a figurative sense, say 「ばね」, not this word.
• Related弾機だんきWrittenA Sino-Japanese way of saying 「ばね」; very rare. In modern usage, both everyday and technical contexts prefer 「ばね」 or 「スプリング」.

For springs, bounce, or impetus, 「ばね」 (kanji spelling 「発条」) is the default; 「スプリング」 also works for coil springs, but 「弾機」 is rarely used today.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. （はつじょう、ばね）ばね。
2. （ぜんまい）ぜんまい。