discoloration

As a noun discoloration

is the act of discoloring, or the state of being discolored; alteration of hue or appearance.

As an adjective undefined is

lacking a definition or value.

As nouns the difference between discolorization and discoloration

is that discolorization is a process of losing color while discoloration is the act of discoloring, or the state of being discolored; alteration of hue or appearance.

As nouns the difference between discoloration and pigmentation

is that discoloration is the act of discoloring, or the state of being discolored; alteration of hue or appearance while pigmentation is coloration of human, plant or animal tissue, especially by pigment.

As nouns the difference between coloration and discoloration

is that coloration is the act or art of coloring while discoloration is the act of discoloring, or the state of being discolored; alteration of hue or appearance.

As nouns the difference between discoloration and hyperpigmentation

is that discoloration is the act of discoloring, or the state of being discolored; alteration of hue or appearance while hyperpigmentation is the darkening of an area of skin or nails, caused by increased melanin.

As nouns the difference between discoloration and fading

is that discoloration is the act of discoloring, or the state of being discolored; alteration of hue or appearance while fading is the act of something that fades; gradual diminishment.

As a verb fading is

present participle of lang=en.

As nouns the difference between smear and discoloration

is that smear is a mark made by smearing while discoloration is the act of discoloring, or the state of being discolored; alteration of hue or appearance.

As a verb smear

is to spread (a substance, especially one that colours or is dirty) across a surface by rubbing.

As nouns the difference between discoloration and decoloration

is that discoloration is the act of discoloring, or the state of being discolored; alteration of hue or appearance while decoloration is an alternative spelling of lang=en.

Spot is a related term of discoloration.

As nouns the difference between spot and discoloration

is that spot is while discoloration is the act of discoloring, or the state of being discolored; alteration of hue or appearance.