tracks, mark, print, impression
跡 centers on a visible trace left behind: tracks, marks, prints, or impressions that show where something has been or what happened.
跡 combines ⻊ (foot) with 亦 and 足, suggesting a foot leaving a mark or track. The exact historical development of the right side is uncertain.
The left side is a foot ⻊, and the right side looks like a footprint with a heel and toes. Imagine a foot stepping in mud and leaving a clear print behind.
For セキ, picture a detective examining tracks at a crime scene and saying 'I see key evidence': see key -> セキ, and the tracks are the key clue.
miracle; wonder; marvel
trace; tracks; mark; sign
(archeological) remains; ruins; relics
chase; pursuit; tracking; stalking
trace; vestige; mark; sign; evidence
footprints
tire track
former site (of something); site (e.g. of a demolished building)
scar
traces; evidence
historic landmark; historic site; historic remains
handwriting
castle site; ruins of a castle
heir; inheritor
trace; vestige; evidence
ruins of a fire; fire-devastated area
heir; heiress; inheritor; successor
wake (of a ship or aircraft)
holy site
standard move