plaque

nouns

(pathology) a small abnormal patch on or inside the body
plaque
domain category
the branch of medical science that studies the causes and nature and effects of diseases
pathology
is a type of (narrower)
a small contrasting part of something
"a bald spot"; "a leopard's spots"; "a patch of clouds"; "patches of thin ice"; "a fleck of red"
dapple, fleck, maculation, patch, speckle, spot
a memorial made of brass
brass, memorial tablet, plaque