volar vs sole

volar is not a noun while sole is a noun.

Word	Noun	Adjective	Verb	Adverb
volar	No	Yes	No	No
sole	Yes	Yes	Yes	No

volar (noun)	sole (noun)
	right-eyed flatfish; many are valued as food; most common in warm seas especially European
	the underside of footwear or a golf club
	the underside of the foot
	lean flesh of any of several flatfish

volar (adjective)	sole (adjective)
relating to the palm of the hand or the sole of the foot	being the only one; single and isolated from others
	not divided or shared with others

volar (verb)	sole (verb)
	put a new sole on