The document discusses homophones, which are words that are pronounced the same but have different meanings and spellings. It provides examples of many common homophone pairs in English including ate/eight, hour/our, there/their, week/weak, won/one, two/too, wear/where, I/eye, right/write, hole/whole, piece/peace, son/sun, hear/here, plane/plain, see/sea, aloud/allowed, cereal/serial, its/it's, know/no, cheque/check, way/weigh, wait/weight, sail/sale, flower/flour, wood/would, board/bored, roll/role