areola vs areolar

areola is a noun but areolar is not a noun.

Word	Noun	Adjective	Verb	Adverb
areola	Yes	No	No	No
areolar	No	Yes	No	No

areola (noun)	areolar (noun)
small circular area such as that around the human nipple or an inflamed area around a pimple or insect bite
small space in a tissue or body part such as the area between veins on a leaf or an insect's wing

areola (adjective)	areolar (adjective)
	relating to or like or divided into areolae