Fetching details from the dictionary...

wound; injury; cut; gash; bruise; scratch; scrape; scar
chip; crack; scratch; nick
flaw; defect; weakness; weak point
stain (on one's reputation); disgrace; dishonor; dishonour
(emotional) hurt; hurt feelings
テーブルに小さな疵がついてしまった。
A small scratch appeared on the table.
疵のない完璧な作品は珍しい。
A flawless work is rare.
この疵は磨けば目立たなくなると思う。
I think this scratch will be less noticeable if you polish it.