overlap vs turnup

overlap and turnup both are nouns.

Word	Noun	Adjective	Verb	Adverb
overlap	Yes	No	Yes	No
turnup	Yes	No	No	No

As nouns, turnup is a hyponym of overlap; that is, turnup is a word with a more specific, narrower meaning than overlap:

overlap: a flap that lies over another part
turnup: the lap consisting of a turned-back hem encircling the end of the sleeve or leg

Other hyponyms of overlap include cuff, lapel, lappet.

overlap (noun)	turnup (noun)
a flap that lies over another part	the lap consisting of a turned-back hem encircling the end of the sleeve or leg
the property of partial coincidence in time
a representation of common ground between theories or phenomena

overlap (verb)	turnup (verb)
extend over and cover a part of
coincide partially or wholly