Animal tracks were left in the snow.
犯人は何の跡も残さずに逃げた。
The culprit fled without leaving any trace.
Refers to the location where something once existed, especially historical ruins or the former site of a building.
ここはかつて城があった跡です。
This is the site where a castle once stood.
城の跡を見に行った。
I went to see the remains of a castle.
Only when written 痕
Specifically a physical scar or lingering mark on the body or an object; often written 痕.
手術の痕がまだ少し残っている。
The scar from the surgery still remains a little.
The mud on his shoes left marks on the floor.
A ring mark was left on the desk from the cup.
Over time, the scar faded away.
The hunter followed the animal's tracks into the mountains.
This park used to be the site of a factory.
傷跡 specifically means a scar left by a wound, while 跡 alone is the more general word that can mean any kind of scar or mark depending on context.
跡 is a broad word for any mark, trace, or remains, while 足跡 specifically refers to a mark left by feet (or an online visit record).
跡 is the plain, everyday word for a mark or trace, while 形跡 is more formal and often used for signs that let one deduce a past event.
castle ruins; castle site
heir; inheritor · successor
trace; vestige; evidence
ruins of a fire; fire-devastated area
heir; successor; inheritor
dwelling site; habitation site; settlement remains
ruins of a tower
remains of a dugout; trench remains
wedge marks in stone
kiln site; remains of a kiln
family headship; inheritance; succession
shoe mark; shoe print
cut-over land; stubble field; aftermath of cutting
stubble after shaving; shaving stubble
operation scar; surgical scar