An equation is any equation with an equal sign. No matter how absurd this equation is, or whether it is true or not, as long as it is connected by an equal sign, it is called an equation.

Equality generally refers to comparing two formulas or two quantities. These two formulas may have different forms, but they ultimately express the same thing or a numerical value. This is called equality. There are many examples of equality, such as |- 1| and 1 equality. But in different forms.