Overlap
WordNet
noun
(1) A flap that lies over another part
"The lap of the shingles should be at least ten inches"
(2) The property of partial coincidence in time
(3) A representation of common ground between theories or phenomena
"There was no overlap between their proposals"
verb
(4) Coincide partially or wholly
"Our vacations overlap"
(5) Extend over and cover a part of
"The roofs of the houses overlap in this crowded city"
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