yes
Spray it with a penetrating oil leave it for a few hours then try to loosen it, or heat the nut up quickly and try to remove it then.
When an object is heated, it will expand. When cooled it will contract. So if you quickly heat and cool a stuck nut and bolt, it can break apart the rust or whatever is causing it to stick.
A nut is called screw when its head is tightend in component .but in case, tight of nut is not possible without bolt.since screw is tight without nut bolt it is not possible in case of nut.
Heat the nut (preferably with a torch!) and cool the bolt (screw).
That's correct. This particular wrench holds the nut or bolt head better than any other wrench.
By heating the nut (and avoiding the bolt as much as possible) the metal expands, this increases the size of the hole in the middle, releasing pressure against the bolt and allowing you to turn the nut while hot. Wear heat proof gloves, eye protection and have extinguishing equipment and cold water to hand. The level of heat required is often described as "cherry red" and can cause some types of metal to permanently change their hardness... be very careful if you are working on safety critical things like brakes, replace all affected parts.
How is a nut like a bolt
on the inside of your wheel there is a little nut screwed to the bolt on the trucks, use a wrench to tighten that
A box wrench is always the most effective to loosen tight nuts.
No. A nut and bolt are a matched set of fasteners. The bolt goes into or through the object it will secure, the nut is spun on to the bolt and snugged up tight to complete the fastening. A screw is a single fastener driven into (usually) wood - there is no nut used with it. There are also screws for use in metal, but they do not hold as securely as a nut and bolt.
how to loosen a tight nut
A bolt without a nut or a head is called a stud.