What is the difference between saccharin and saccharic acid?

(N/A) Saccharin is an artificial sweetening agent. It is about $550$ times as sweet as cane sugar. It is excreted from the body in urine unchanged. It appears to be entirely inert and harmless when taken. Its use is of great value to diabetic people who need to control intake of calories.
On the other hand,saccharic acid is a dicarboxylic acid (specifically a sugar acid) obtained by the oxidation of both the terminal aldehyde and primary alcohol groups of glucose,typically using concentrated $HNO_3$.