macule vs plague spot

macule and plague spot both are nouns.

Word	Noun	Adjective	Verb	Adverb
macule	Yes	No	No	No
plague spot	Yes	No	No	No

As nouns, plague spot is a hyponym of macule; that is, plague spot is a word with a more specific, narrower meaning than macule:

macule: a patch of skin that is discolored but not usually elevated; caused by various diseases
plague spot: a spot on the skin characteristic of the plague

Other hyponyms of macule include freckle, lentigo, liver spot.

macule (noun)	plague spot (noun)
a patch of skin that is discolored but not usually elevated; caused by various diseases	a spot on the skin characteristic of the plague