杭・杙・株|くいkui[1]atamadaka (head-high)

1. nounstake; post; pile; picketesp. 杭, 杙
   マンション用よう地ちは杭くいで囲かこまれている。↗

   The site of the condominium is enclosed with stakes.
2. nounstumpesp. 株

• Related支柱しちゅうNeutralA prop or support, as in 「支柱を立てる」; it stresses the supporting role and is not limited to stakes driven into the ground.
• Related株くいぜNeutralRead くいぜ and means the stump left after a tree is cut down, as in 「株を守る」; 「杭」 is a stake driven into the ground.

Use 「杭」 for a stake driven into the ground, as in 「杭を打つ」 or 「出る杭は打たれる」. For the stump left after felling a tree, say 「株（くいぜ）」; for something that props or supports, say 「支柱」.

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

1. （くい）地面じめんに打ち込うちこんで支柱しちゅう・目印めじるしにする棒ぼう。
2. （くい、くいぜ）切り株きりかぶ。