These are standard float glass but pigmented in various colours in order to typically absorb solar radiation. Tinted glass takes care to a smaller of thermal insulation and to large extent of solar radition.
Standard float glass which is generally used in windows where there is not much requirements of thermal / sound / safety.
These are float glass which have been tempered under very high temperature, thus making them times stronger than the normal float glass.
Double glazing is the introduction of a second glass with a an air gap unit which helps in providing greater Insulation thereby providing greater energy saving and greater sound insulation. It is generally installed where lesser sound decibels is required.