chloasma vs melasma

chloasma and melasma both are nouns.

Word	Noun	Adjective	Verb	Adverb
chloasma	Yes	No	No	No
melasma	Yes	No	No	No

As nouns, chloasma and melasma are synonyms defined as:

chloasma and melasma: a tan discoloration of a woman's face that is associated with pregnancy or with the use of oral contraceptives

Other synonyms of chloasma include mask of pregnancy.

chloasma (noun)	melasma (noun)
a tan discoloration of a woman's face that is associated with pregnancy or with the use of oral contraceptives	a tan discoloration of a woman's face that is associated with pregnancy or with the use of oral contraceptives