Red is a primary color and cannot be produced by mixing other colors. Red, blue and yellow are the three primary colors. Only secondary and tertiary colors can be fabricated by mixing the appropriate colors together.
A fact is a piece of information that can be strictly defined and proved true. An opinion is a statement that expresses a belief, value, or feeling. An opinion cannot be proved true or false. For example, a person's age is a fact, but if someone is asked how old they feel, it is impossible to prove the person's answer to be true or false.
Law is a principle; factis an event Law is conceived; fact is actual. Law is a rule of duty; fact is that which has been according to or in contravention of the rule. The distinction is well illustrated in the rule that the existence of foreign laws is matter of fact.