overlap, convergence, intersection -- (a representation of common ground between theories or phenomena; "there was no overlap between their proposals")
overlap -- (the property of partial coincidence in time)
lap, overlap -- (a flap that lies over another part; "the lap of the shingles should be at least ten inches")
Overview of verb overlap
The verb overlap has 2 senses
overlap -- (coincide partially or wholly; "Our vacations overlap")
overlap -- (extend over and cover a part of; "The roofs of the houses overlap in this crowded city")