backpack, back pack, knapsack, packsack, rucksack, haversack
['hard disc, hard disk, fixed disk', 'pick, plectrum, plectron', 'bow tie, bow-tie, bowtie', 'diaper, nappy, napkin', 'electric fan, blower', 'barrow, garden cart, lawn cart, wheelbarrow', 'sunscreen, sunblock, sun blocker']