What's the difference between trundle and trunnel?

Trundle

Definition:

(v. i.) A round body; a little wheel.
(v. i.) A lind of low-wheeled cart; a truck.
(v. i.) A motion as of something moving upon little wheels or rollers; a rolling motion.
(v. i.) A lantern wheel. See under Lantern.
(v. i.) One of the bars of a lantern wheel.
(v. t.) To roll (a thing) on little wheels; as, to trundle a bed or a gun carriage.
(v. t.) To cause to roll or revolve; to roll along; as, to trundle a hoop or a ball.
(v. i.) To go or move on small wheels; as, a bed trundles under another.
(v. i.) To roll, or go by revolving, as a hoop.

Example Sentences:

(1) This is why, you see, people with rucksacks pummel all those in their immediate vicinity with their giant sacks as they trundle on their way, whacking them about as they blithely move about trains, pavements or any other public area.
(2) The vehicle has been trundling around the large Gale crater looking for evidence that Mars was habitable in the ancient past.
(3) "Outside of the COI I'd say we had been trundling along nicely.
(4) We left with a wind-up frog that seemed entrancingly lifelike in the shop floor demo, but at home just trundled dully up and down the bathtub until it caught black mould and was banished to the airing cupboard.
(5) 5 min: Hughes brings down Trundle in the middle of the park and Bristol City will take this chance to chip the ball into the box.
(6) Instead of shooting from an increasingly tight angle, he drags the ball back into the path of Lahm, trundling along behind him.
(7) It denies the rebels have surface-to-air missiles, despite video footage showing the truck-mounted system trundling through east Ukraine (and more recently heading back to Russia).
(8) The train now trundles through silent stations, its wagons free of the crowds of men, women and children who once clung to roofs and ladders.
(9) Viktor Nemets plays the decent, dogged driver who trundles through lawless rural badlands before grinding his gears in a gutted community where the menfolk have gone to the bad and the police are too busy tracing nude pictures out of girlie magazines to do anything about it.
(10) The $2.5bn (£1.6bn) trundling science lab began its mission on Mars after a dramatic arrival last month in which the rover was winched to the surface from a spacecraft hovering overhead on rocket thrusters.
(11) The clearance falls to Shaw, who trundles forward until someone deigns to close him down, which is quite a while.
(12) Jamaica meanwhile try a couple of long balls over the top (their predicted tactic pre-game) before Woodbine tries a shot from distance that trundles weakly out for a goal kick.
(13) The breakthrough came after nine minutes when Navas cut the ball back into Touré’s path and the Ivorian’s shot flicked off two players before trundling past Myhill almost in slow motion.
(14) Trundling on a cheesy tourist trail around the Italian capital (the Trevi fountain, the Spanish Steps), it tells four whimsical stories that never intersect, meaning that its most watchable stars – Alec Baldwin, Penélope Cruz, Roberto Benigni and Allen, appearing in one of his movies for the first time since Scoop, in 2006 – never interact.
(15) One plan is for a mass "kiss-in" as the Popemobile trundles past.
(16) There is little sign that the country faces yet another fateful election next Sunday, except for a couple of posters in support of the ruling Justice and Development party, or AKP, and a solitary election van trundling through the streets blaring AKP’s campaign messages through the rows of immaculate yellow and beige housing blocks.
(17) Over four days as the train trundled its way through the heart of Russia and in to Mongolia, two people who were adamant they were not looking for love, opened their hearts, fell madly in love, began planning a future, pledging to spend the rest of their lives together.
(18) If you live in rural Cumbria, chances are you don’t see the inside of many buses: in some parts a bus comes trundling along once a week.
(19) 76 min: Uruguay substitution: Alvaro Pereira, who has played well, trundles off, to be replaced by Abreu, author of that splendid winning spotkick against Ghana.
(20) Google’s cars are trundling slowly around city streets, a strategy that exposes them to more risk and uncertainty, but also means that any accidents are likely to be slow-speed bumps and scrapes.