macule vs macula

macule and macula both are nouns.

Word	Noun	Adjective	Verb	Adverb
macule	Yes	No	No	No
macula	Yes	No	No	No

As nouns, macule and macula are synonyms defined as:

macule and macula: a patch of skin that is discolored but not usually elevated; caused by various diseases

macule (noun)	macula (noun)
a patch of skin that is discolored but not usually elevated; caused by various diseases	a small yellowish central area of the retina that is rich in cones and that mediates clear detailed vision
	a patch of skin that is discolored but not usually elevated; caused by various diseases
	a cooler darker spot appearing periodically on the sun's photosphere; associated with a strong magnetic field