MAGNET
A magnet is a material or object that produces a magnetic field. This magnetic field is invisible but is responsible for the most notable property of a magnet: a force that pulls on other ferromagnetic materials, such as iron, and attracts or repels other magnets.

Magnetic field-
A magnetic field is a vector field that describes the magnetic influence of electric charges in relative motion and magnetized materials. ... The effects of magnetic fields are commonly seen in permanent magnets, which pull on magnetic materials (such as iron) and attract or repel other 
magnets.

MAGNETIC DOMAIN-
A magnetic domain is a region within a magnetic material in which the magnetization is in a uniform direction. This means that the individual magnetic moments of the atoms are aligned with one another and they point in the same direction. ... These are the ferromagnetic, ferrimagnetic and antiferromagnetic materials.

Why does a magnet attract iron?

Magnets attract iron due to the influence of their magnetic field upon the iron. ... When exposed to the magnetic field, the atoms begin to align their electrons with the flow of the magnetic field, which makes the iron magnetized as well. This, in turn, creates an attraction between the two magnetized objects.

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Web rMAGNETICA magnetic domain is a region within a magnetic material in which the magnetization is in a uniform direction. This means that the individual magnetic moments of the atoms are aligned with one another and they point in the same direction. ... These are the ferromagnetic, ferrimagnetic and antiferromagnetic materials.