What's the difference between overfly and overply?
Overfly
Definition:
(v. t.) To cross or pass over by flight.
Example Sentences:
(1) Airlines were asked not to overfly Crimea, the Black Sea and the Sea of Azov due to the potential for conflicting air traffic control instructions between Ukrainian and Russian authorities.
(2) British Airways said it was not overflying Ukraine.
(3) Decides that all States shall deny permission to any aircraft to take off from, land in or overfly their territory, if they have information that provides reasonable grounds to believe that the aircraft contains items the supply, sale, transfer, or export of which is prohibited by paragraphs 9 and 10 of resolution 1970 (2011) as modified by this resolution, including the provision of armed mercenary personnel, except in the case of an emergency landing; Asset freeze 19.
(4) Probable source areas of insects overflying the radar were identified by calculations of the insects' back-trajectories.
(5) A notice posted by the UK's Civil Aviation Authority (CAA) on 14 June urged carriers to avoid overflying Crimea and parts of southern Ukraine a month ago due to safety concerns, but they were not ordered to avoid the rest of the country.
(6) It also emerged that as recently as a month ago British airlines were given the all-clear to overfly the area where flight MH17 was downed, after being told that operations were "normal" in the region.
(7) Nato announced on Monday night it will deploy AWACS reconnaissance aircraft to overfly Poland and Romania as part of alliance efforts to monitor the crisis.
(8) Britain, it had been judged, was safe for overflying at more than 20,000 feet, above the cloud of volcanic ash, but not for takeoffs and landings.
(9) Equipped with surveillance systems that eavesdrop on the lowly world it overflies, allegedly able to fire missiles and to withstand a nuclear blast, Air Force One is evidence of dominance.
(10) Decides that all States shall deny permission to any aircraft registered in the Libyan Arab Jamahiriya or owned or operated by Libyan nationals or companies to take off from, land in or overfly their territory unless the particular flight has been approved in advance by the Committee, or in the case of an emergency landing; 18.
(11) Britain's biggest airport would still, indeed, like a third runway – and for good measure it now has identified several different neighbourhoods it could flatten or overfly .
(12) This could involve allowing US war planes to launch missions from Britain or allowing US aircraft to overfly the UK.
Overply
Definition:
(v. t.) To ply to excess; to exert with too much vigor; to overwork.