Definition of overlap | Bee Dictionary of English

n a representation of common ground between theories or phenomena
there was no overlap between their proposals
n the property of partial coincidence in time
n a flap that lies over another part
v coincide partially or wholly
Our vacations overlap
v extend over and cover a part of
The roofs of the houses overlap in this crowded city

Radiologists and photographers share a common urge to capture the hidden depths of people and things, though rarely do their skills and methods overlap.
Rather, physics, geology, economics, psychology, even the arts all overlap in a kind of meta-system, with the principles of one touching those of the others.
The caves faced a narrow valley that twisted its way through mountain ridges that seem to overlap as they rise toward the White Mountains.

NFL news: Rob Gronkowski schedules back surgery, Brian Cushing returns soon
New England Patriots tight end Rob Gronkowski will have back surgery on Tuesday . The surgery has been long-rumored, but Friday was the first time we received a date for what has been described as a "minor" procedure. It's the fifth surgery since November for Gronkowski, but his recovery time should overlap with his previous forearm surgery and he shouldn't miss extra time. More : Track ...
June 15, 2013 - SB Nation
Edward Snowden: Whistle-blowing protections most likely won't help
Whether Edward Snowden is a “traitor,” as House Speaker John Boehner called him, or a whistle-blower trying to prevent his country’s descent into “turnkey tyranny,” as he claimed in an interview, is simultaneously a legal and a moral question – and the answers may not overlap in this case, legal experts say.
June 14, 2013 - Christian Science Monitor via Yahoo! News
Pop. 1280 Announce New Album Via Blood-Curdling 'Lights Out' Single
Scumsucking New York noise-punks Pop. 1280 will return with their second album August 6 via Sacred Bones. Dubbed Imps of Perversion , the 10-song set was produced by Martin Bisi (Sonic Youth, Swans) and is, according to the label, expected to include "stories of lust, sexual confusion, temptation, and debauchery," as well as the occasional areas in which those concepts overlap, no doubt...
June 14, 2013 - Spin

Barbara Rothbaum in WNYT
One based upon mutual interest and mutual respect; and one based upon the truth that America and Islam are not exclusive, and need not be in competition. Instead, they overlap, and share common principles -- principles of justice and progress;... Barack Obama http://www.google.com/url?q=http://en.wikipedia.org/wiki/Barack_Obama&source=dictionary&usg=AFQjCNHQ0yfPaaXFGqLKymRgcres0I2nuA AFP http://www.google.com/url?q=http://www.google.com/hostednews/afp/article/ALeqM5gAW5IxC8STapBoBdNxeVejVSesqw&source=dictionary&usg=AFQjCNHtV6XnjA2kNxzfYYaaprl9N3Py-w Jun 4, 2009 71099 95165 overlap The same incident might have triggered both processes," Rothbaum said, noting that after World War I, "they thought that shell shock was a neurological disorder and it turned out to have a lot of overlap with the psychological disorder."
Patrick Fitzgerald in International Herald Tribune
Fitzgerald, however, said any testimony by Jarrett, Emanuel, Jackson or Larsen "would overlap with the subject matter of the pending criminal investigation."