As of today, the Biggest / Largest / Grandest 😱:
Planet - Jupiter
Moon - Ganymede of Jupiter
Star - RW Cephei
Continent - Asia
Country - Russia
City - Shanghai, China
Ocean - Pacific Ocean
River - Nile, Africa
Lake - Lake Superior, North America
Democracy - India
Population - China
Forest - Amazon Jungle, South America
Diamond mine - Orapa, Botswana
Gold mine - Grasberg, Indonesia
Iron ore mine - Kiruna, Sweden
Rail Network - U.S.A.
Road Network - U.S.A.
Ship/Vessel - Seawise Giant (a.k.a. Mont). Status: Scrapped in 2010
Railway station - Grand Central Terminal, New York City, U.S.A. with 44 platforms
Airport - Hartsfield–Jackson Atlanta International Airport, Atlanta, Georgia
Port - Shanghai, China
Army - China
Navy - U.S.A.
Air Force - U.S.A.
Stock Market - New York Stock Exchange, U.S.A.
Bank (by assets) - Industrial and Commercial Bank of China
Company (by revenue) - Walmart
Company (by value) - Apple
Company (by franchises) - McDonald's
Employer (Non-corporate) - United States Department of Defense
Employer (Corporate) - Walmart
Currency - Kuwaiti Dinar (KWD), Kuwait
= INR 222.86
Word - pneumonoultramicroscopicsilicovolcanoconiosis, the longest word in any of the major English language dictionaries and it refers to a lung disease.
et cetera.
Source: via Google 😉