Kilimanjaro is a mountain, the rest are mountain ranges
Stainless Steel is an alloy of metals, the rest, metals found on the periodic table
Chef is an occupation, the rest, industries
Playstation is a product of a company (Sony), the rest are companies.
Quinoa is a grain, the rest are nuts
Tuba is a brass instrument, the rest are woodwind
Burkina Faso is an African country the rest are South American countries
Sirius is a star the rest are star constellations
Avocado is a fruit the rest are vegetables
Adriatic is a sea and the rest are rivers
Ahmad is a Quranic name, the rest are Biblical
Spring balanced scale measures weight, the rest measure distance
Swimming is a race based sport, the rest are ball sports
Clavicle is a bone, the rest are muscles
Siamese is a breed of cat, the rest are breeds of dogs
Dinar is a currency, the rest are languages
Sinusitis is a condition that affects the nose, the rest affect the eyes
Maasai is an African tribe the rest are native American tribes
Tortellini is a pasta, the rest are pasta sauces
Kwanzaa is a non-religious based holiday, the rest are