A Backpack also called book bag, kit bag, knapsack, rucksack, a pack is, in its simplest form, a cloth sack carried on one’s back and secured with two straps that go over the shoulders, but there can be variations to this basic design. Lightweight types of backpacks are sometimes worn on only one shoulder strap.
Baggage or luggage consists of bags, cases, and containers which hold a traveler’s articles while the traveler is in transit.The modern traveler can be expected to have packages containing clothing, toiletries, small possessions, trip necessities, and on the return-trip, souvenirs. For some people, luggage, and the style thereof is representative of the owner’s wealth.