The natural sense given to words.
It is a rule that when words are used which will bear a natural sense and an artificial one, or one to be made out by argument and inference, the natural sense shall prevail. It is simply a rule of construction and not of addition.
common intent cannot add to a sentence words which have been omitted. In pleading, certainty is required, but certainty to a common intent is sufficient; that is, what upon a reasonable construction may be called certain without recurring to possible facts.