zamyslal som sa nad zrozumitelnostou wikipedie, a napadlo ma spravit taky test
tu su 3 popisy kazdodennych veci, ktore pozna aj dieta
da sa z toho pochopit o co ide?

1. WHAT IS THIS?
a circular component that is intended to rotate on an axle.
in conjunction with axles, [...]
facilitating movement or transportation while supporting a load, or performing labor in machines.
Common examples are found in transport applications.
It greatly reduces friction by facilitating motion by rolling together with the use of axles.
In order to rotate, a moment needs to be applied to it about its axis, either by way of gravity,
or by application of another external force.

2. WHAT IS THIS?
It is a tool meant to deliver an impact to an object.
The most common uses are for [...], fitting parts, forging metal and breaking up objects.
These things are often designed for a specific purpose, and vary widely in their shape and structure.
The usual features are a handle and a head, with most of the weight in the head.
The basic design is hand-operated, but there are also many mechanically operated models for heavier uses.

3. WHAT IS THIS?
It is a three-dimensional solid object bounded by six square faces, facets or sides, with three meeting at each vertex.
It can also be called a regular hexahedron and is one of the five Platonic solids.
It is a special kind of square prism, of rectangular parallelepiped and of trigonal trapezohedron.
It is dual to the octahedron. It has cubical symmetry (also called octahedral symmetry).
It is special by being a cuboid and a rhombohedron.