From this Wikipedia page on rice, it is mentioned that 100g of rice contains 80 g of carbohydrates, of which 0.12 g is "sugar" and 1.3 g is "fibre". I believe the "fibre" refers to dietary fibres that are not absorbed by the body and are just passed out of the body. However, I understand "carbohydrates" to be almost the same as "sugar" so what is the difference between the two terms as used in this context. I am guessing that "sugar" refers to simple monomeric units of carbohydrates while the rest of the "carbohydrates", excluding "sugar" and "fibre", is in the form of starch polymers, namely amylose and amylopectin. Could someone help to verify my understanding?