Give examples of walk which is not a trail and a trail which is not a path?
912932
A walk that is not a trail is like the walk of life, a physical or spiritual journey. A trail that is not a path is mouse trails on the Windows settings.
873221
concrete or tangible should work, depending on the definition of "physical" that you were looking to paraphrase.  Not really sure what you mean be non-examples.  Any word that has nothing to do with "physical" would be a non-example.
900277
Meandered\nTo move aimlessly and idly without fixed direction:  See Synonyms at wander.
1138933
the closest you can get to an opposite for "not" is nothing.  literally, i mean like "   " because adding "not" makes whatever it goes with the opposite.  so the opposite of "not" is just to not have the "not"  :)
122237
Walking is a more leisurely form of exercise.\n\nwalking is the subject\n\nobject in your version
599976
There are any number of examples. \n\nFor example many plant species and even entire communities have distributions controlled by soil type to the degree that it is normal to refer to sandstone communities or basalt communities.
831958
"The Road Not Taken" because it talks about the choices people have to make in their life. At least once in a while we all have to choose between two roads because we "can´t travel both".
201537
Try "A Walk to Remember"
865553
walking burns calories. just slow...\n\ndiet and exercise....
108803
Mountain. A mountain's slope goes up, but the mountain doesn't grow.
567874
walking is the best way....not slow strolling....but brisk walking!!!!!!!!
282895
Getting started and staying with it.  Exercising is easy - walking is simplest form.   Think of it as a lifestyle change.
870907
That statement (as written) can be trivially shown to be false.  Nature is full of examples of non-living motion.\n\nRivers flow.  Waves crash and roll.  Rain and snow falls from the sky.  Rocks roll down eroding hillsides.  Wind blows dead leaves.  Hurricanes and tornadoes spin and march across sea and land.  Tides rise and fall. Volcanoes erupt.  Planets orbit stars and moons orbit planets.  Nature has long been full of motion, long before life arrived.\n\nAnd many (in fact most) living things do not move at all.  Trees move in the wind, but not because they are alive.  \n\nIt gets closer to being accurate if you mean microscopic motion.  Most living things have microscopic structures involved in the transport of nutrients and gasses from one part of its body to another ... for example, if you look at the leaves of a tree in a microscope, you can see the flow of nutrients through its veins.  So in that sense, the sentence starts to make sense.
329526
walking the straight and narrow..ie, staying out of trouble
1144520
Yep, there are several.  Two good examples would be the New York Ramblers (http://www.nyramblers.org/) and the Urban Trail Conference (http://www.urbantrail.org/).
659012
I have got another one for you :\n\nCa te dit d'aller faire une ballade?\n\na walk = une promenade / ballade à pied ( by foot)\na ride = une promenade à vélo, voitute, cheval\n                      ( by bike, car, horse )
527515
go out even if its only for a walk. You never know what you might come across