Freezing is the change from liquid to solid.
As a liquid loses energy, its particles move less and can form a more ordered structure.
Water has an important quirk: ordinary ice is less dense than liquid water. That is why it floats.
Freezing is also central to metal casting and many manufacturing processes.
A liquid can sometimes remain liquid below its normal freezing point. This is supercooling. A disturbance or tiny crystal can then trigger rapid solidification.
A useful way to understand this phenomenon is to separate the driving force from the visible result. Temperature, pressure, concentration, surface area and the nature of the materials can each change the rate or the final state. In real systems, several of these factors often act at the same time.
That is why the same phenomenon can look different in a laboratory, in the kitchen or outdoors. The underlying chemistry or physics stays the same, but the conditions change the balance.
Real examples often add one more layer: geometry, impurities, coatings, humidity, flow or manufacturing history can alter what you observe even when the main mechanism is unchanged.
That is why two objects made from broadly similar materials can behave differently. The useful question is not only “what is it made of?” but also “how is it built, under what conditions, and for which function?”