ボトムbotomu

1. nounbottom
2. nounlower garment (e.g. jeans, slacks, skirt, etc.)
3. nounhem (of trousers, skirt, etc.)

• Synonym底そこNeutralMost common word for the very bottom of a container or terrain, also a shoe sole; 「ボトム」 is a loanword that leans toward lower garments or the lowest point.
• Related下方かほうWrittenWritten/formal prose for the area or direction below, as in 「下方修正」; 「ボトム」 names the lowest point or lower garments, not a direction.
• Related下部かぶNeutralThe lower part of an object, often set against 「上部」; 「ボトム」 leans toward the very bottom or to lower garments.
• Related下側したがわNeutralThe side facing downward, as in 「箱の下側」; 「ボトム」 leans toward the very bottom and can also mean lower garments.
• Related底面ていめんWrittenWritten/formal prose for the face of an object that points down, or the base of a solid; 「ボトム」 is more colloquial and leans to bottoms and lower garments.
• Related下面かめんWrittenWritten/formal prose for the underside surface, common in technical descriptions; 「ボトム」 leans toward bottoms or lower garments.
• AntonymトップNeutralLoanword for the top or first place; in clothing it is the upper garment, the counterpart of 「ボトム」 as lower garment or bottom.

Use 「ボトム」 for lower garments (as in 「ボトムス」) or the lowest point; for the bottom of everyday things pick 「底」, for a lower section 「下部」 or 「下側」. 「下方」「底面」「下面」 are written/formal prose, and 「トップ」 is the opposite.

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

1. 底そこ。土台どだい。低ひくい場所ばしょ。
2. 下半身かはんしんに着用ちゃくようする衣服いふく。