0 blog, link, prize, site. Prize is the odd one out because the others are all about the internet.
1 traffic, stadium, cricket, fan. Fan is the odd one out because the others are about sports venues or types of sports.
2 horror, skier, musical, adventure. Skier is the odd one out because the others are genres or types of entertainment.
3 embassy, mosque, temple, cathedral. Embassy is the odd one out because the others are places of worship.
4 guest, member, statue, relative. Statue is the odd one out because the others are roles or relationships.
5 climber, diver, runner, golfer. Golfer is the odd one out because the others are activities done in or related to water.
6 board game, badminton, puzzle, video game. Badminton is the odd one out because the others are types of games played without physical exertion or equipment.
7 skyscraper, tournament, champion, professional. Skyscraper is the odd one out because the others are related to competition or achievement in sports.