macule vs lentigo

macule and lentigo both are nouns.

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

As nouns, lentigo is a hyponym of macule; that is, lentigo 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
lentigo: a small brownish spot (of the pigment melanin) on the skin

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

macule (noun)	lentigo (noun)
a patch of skin that is discolored but not usually elevated; caused by various diseases	a small brownish spot (of the pigment melanin) on the skin