irregular shape discoloration fading or discoloration a darker color than the surrounding area texture differences between the stain and the surrounding area a distinct border or outline of the stain
stain which has irregular shape stain which has discoloration stain which has fading or discoloration stain which is a darker color than the surrounding area stain which has texture differences between the stain and the surrounding area stain which is a distinct border or outline of the stain