stains
stains
verb
To mark or discolour something, often permanently, with a substance.
"Red wine stains the carpet easily."
noun
Unwanted marks or discoloured patches, often difficult to remove from a surface.
"These coffee stains are stubborn."
Thesaurus
Synonyms: stigma, mark, brand, tarnish, maculate, sully, defile, discoloration, discolouration, blot, smear, smirch