経路・径路・逕路|けいろkeiro[1]atamadaka (head-high)

1. nouncourse; route; path; channel
   彼かれは１人ひとりで飛とぶことに慣なれていた。そして彼かれは想像そうぞうの中なかで何度なんどもこの経路けいろを飛とんでいたのだ。↗

   He was accustomed to flying alone, and he had flown this route in his imagination many times.
2. nounprocess; stages

• SynonymルートNeutralLoanword for a route or channel, as in 「流通ルート」「登山ルート」; 「経路」 leans toward written, technical explanations.
• Synonym道筋みちすじWrittenWritten word for a route or a line of reasoning, as in 「解決への道筋」; leans toward the way or means to a goal.
• Synonym路線ろせんNeutralA transport line or an organization's policy line, as in 「バス路線」; leans toward fixed, established routes.
• Synonym進路しんろNeutralThe direction of travel or one's future course, as in 「台風の進路」; leans toward the direction one is heading or will take.
• Synonym通路つうろNeutralA passage or aisle, as in 「通路側の席」; leans toward passageways inside buildings.
• SynonymコースNeutralLoanword for a route to follow or a course of study, as in 「散歩コース」「登山コース」; also tracks and lanes; leans toward a planned route.
• Synonym道順みちじゅんNeutralThe way to get somewhere, as in 「駅までの道順」; leans toward the concrete route to take — directions.
• Synonym順路じゅんろNeutralA preset or designated route, such as the visitor route around an exhibition.
• Synonym通り道とおりみちNeutralA road one travels regularly or just passes through, as in 「通り道にある店」; leans toward the concrete road itself.
• Synonym途とWrittenWritten register: the same word as above — written 「途」 or 「径」, these are just alternative spellings of 「道」 with the same meaning.
• Synonym行路こうろWrittenWritten word for the road one travels or a journey; little used today — 「道」 is the usual word.
• Related道みちNeutralThe everyday word for a road, also figuratively a way forward, as in 「解決の道」; 「経路」 leans toward the path traveled and the process.
• RelatedラインNeutralLoanword for a line, as in 「生産ライン」; leans toward production or assembly lines.
• Related軌道きどうNeutralAn orbit or rail track, also the right track, as in 「軌道修正」; leans toward a fixed trajectory.
• Related道のりみちのりNeutralThe distance or length of a journey, also the process toward a goal, as in 「長い道のり」; leans toward distance and process.
• Related道路どうろNeutralA road for people and vehicles, as in 「道路工事」; leans toward roads as public infrastructure.
• Related路ちWrittenWritten register: the same word as above — written 「路」, it is just an alternative spelling of 「道」 with the same meaning.
• Related通い路かよいじWrittenWritten word for a road one travels back and forth regularly; carries an old-fashioned, literary flavor.
• Related道途どうとWrittenWritten word for a road or journey; very rare today — say 「道」 instead.
• Related行き道ゆきみちNeutralThe road for going somewhere, as opposed to the way back; few examples in use — 「行きの道」 is more common.

Use 「経路」 for the path something passes through or the way it spreads, as in 「感染経路」「入手経路」「流通経路」. Routes and channels can also be 「ルート」; transport lines are 「路線」; everyday roads are 「道」. The other words cover narrower senses — directions (「道順」), set courses (「コース」「順路」), passages (「通路」), tracks (「軌道」) — among others.

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

1. 通とおってきたみち。みちすじ。