The word "mark" has a variety of synonyms that can be used in various contexts. Some of the most common synonyms for "mark" include "spot," "stain," "blemish," "imprint," "brand," "token," "stamp," and "trace." "Spot" and "stain" are often used to refer to a small or irregular discolored area on a surface. "Blemish" is used to describe any kind of imperfection, while "imprint" refers to a lasting impression or indentation. "Brand" and "token" are often used in marketing or business contexts, while "stamp" is commonly used in postal services. "Trace" is used when referring to a faint indication of something that has been left behind.