線|せんsen[1]atamadaka (head-high)

1. noun, noun (suffix)line; stripe; stria
2. noun, noun (suffix)line (e.g. telephone line); wire
3. noun, noun (suffix)ray (e.g. X-ray); beam
4. noun, noun (suffix)line (e.g. of a railroad); track; route; lane
   この線せんの終点しゅうてんはどこですか。↗

   Where is the end of this line?
5. noun, noun (suffix)outline; contours; form
6. noun, noun (suffix)level
7. noun, noun (suffix)division
8. noun, noun (suffix)line (of action); position; approach; policy; principle
9. noun, noun (suffix)impression one leaves; air one gives off

• SynonymラインNeutralLoanword for a drawn line, boundary, or route, as in 「ライン引き」 and 「ゴールライン」.
• Synonym筋すじNeutralLong thin stripes or fibers, and by extension the thread of a story or line of reasoning, as in 「話の筋」.
• Related回線かいせんNeutralA communication line such as 「電話回線」; the emphasis is on telecom connections.
• Related電線でんせんNeutralA metal wire that conducts electricity, covering both power and communication lines, as in 「電線に止まる鳥」.
• RelatedケーブルNeutralLoanword for a cable, or a cable railway as in 「ケーブルカー」; the everyday word when you mean a cable.
• Related分け目わけめCasualColloquial word for a parting in the hair or a dividing line; figuratively a decisive moment, as in 「天下分け目」.
• Related分界ぶんかいWrittenWritten/formal prose for demarcation or a dividing boundary; very rare, with the emphasis on separation.
• Related線引きせんびきNeutralThe act of drawing a line or setting a boundary; figuratively, distinguishing what is acceptable from what is not.
• Related電纜でんらんFormalFormal written word for a cable; in modern usage say 「ケーブル」.

Use 「線」 as the default for a line. For a drawn line or boundary say 「ライン」, for stripes or the thread of a story 「筋」, for a phone or telecom line 「回線」, for an electric wire 「電線」, and for a cable 「ケーブル」. To draw a line between things, use 「線引き」.

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

1. （セン）細長ほそながく連続れんぞくするもの。すじ。
2. （セン）点てんと点てんを結むすぶ経路けいろ。
3. （セン）輪郭りんかく線せん。
4. （セン）導線どうせん。電線でんせん。電話線でんわせん。
5. （セン）光線こうせん。放射線ほうしゃせん。
6. （セン）道路どうろ。鉄道てつどうやバスなどの路線ろせん。
7. （セン）方針ほうしん。道筋みちすじ。
8. （セン）種類しゅるい。タイプ。
9. （セン）可能性かのうせい。公算こうさん。
10. （セン）対象たいしょうとなるかならないかの境目さかいめ。区切くぎり。
11. （セン）水準すいじゅん。質しつ。
12. （セン）体型たいけいや言動げんどうから受うける印象いんしょう。