overlap

v. extend over, cover a part of; have something in common

n. something that is superimposed

Overlap may mean one of:Overlap is a synonym for reinterpretationIn railway signalling, an overlap is the length of track beyond a stop signal that is proved to be clear of vehicles in the controls of the previous signal, as a safety margin.Overlap (road), a place where multiple road numbers overlapOverlap-add, an efficient convolution method using FFTDrama term: to start saying something then have someone else start saying the same sentence but starting at a different time. overlap in sailing is:when two or more boats/yachts are not clear astern and not clear ahead.
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Noun
1. a representation of common ground between theories or phenomena; "there was no overlap between their proposals"
(synonym) convergence, intersection
(hypernym) representation, mental representation, internal representation
(hyponym) crossroads
2. the property of partial coincidence in time
(hypernym) concurrence, coincidence, conjunction, co-occurrence
3. a flap that lies over another part; "the lap of the shingles should be at least ten inches"
(synonym) lap
(hypernym) flap
(hyponym) cuff, turnup
Verb
1. coincide partially or wholly; "Our vacations overlap"
(hypernym) coincide, co-occur, cooccur
(hyponym) share
2. extend over and cover a part of; "The roofs of the houses overlap in this crowded city"
(hypernym) cover, extend
(hyponym) imbricate
(derivation) lap

v. overlap, overlay

(v. t. & i.)
To lap over; to lap.
  

(n.)
The lapping of one thing over another; as, an overlap of six inches; an overlap of a slate on a roof.
  

(n.)
An extension of geological beds above and beyond others, as in a conformable series of beds, when the upper beds extend over a wider space than the lower, either in one or in all directions.