macula vs macule

macula and macule both are nouns.

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

As nouns, macula and macule are synonyms defined as:

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

macula (noun)	macule (noun)
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 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