- stain, discoloration, discolouration - a soiled or discolored appearance; "the wine left a dark stain"
--1 is a kind of appearance, visual aspect
--1 has particulars:scorch; bloodstain; iron mold, iron mould; mud stain; oil stain; tarnish Derived form: verb discolour1 - discoloration, discolouration - the act of changing the natural color of something by making it duller or dingier or unnatural or faded
--2 is a kind of change of color
Derived form: verb discolour1