How to say "alongside" in Japanese

• 伝いづたいCommon
  suffixCovers 'along, alongside' when following the line of something elongated such as a wall, a river, or railroad tracks; a common choice for movement or position that keeps close to such a feature.
• 並んでならんで
  adverbMatches 'alongside' through its 'side-by-side, abreast' sense — being next to something in a row. A less common rendering of 'alongside', it suits contexts emphasizing things lined up next to each other.

Choose 「伝い」 for the 'along' sense of following the length of something such as a wall, river, or railroad tracks, and 「並んで」 for the side-by-side, abreast sense of being next to something.

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

• 伝いづたいalong (a wall, river, railroad tracks, etc.)
• 並んでならんでalongside