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a large area of often with a large house on it
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estate
a large area of often with a large house on it
Estate.
The word you're looking for is "estate." An estate typically refers to a sizable area of land that often includes a large house, gardens, and sometimes additional buildings or farmland. Estates can be associated with wealth and often feature extensive grounds.
Large is a comparative term.What may be large in one context may not be so in another.A house garden may be large compared to other house gardens but it is tiny compared to a county, which in turn is small compared to a country,
A large area of flat land is called a plain. Plains are typically characterized by low levels of elevation and minimal variation in topography. They are often found in between mountain ranges or along coastlines.
Antarctica
In order of size: A pile A hill A mountain An island A state/territory A country A continent A moon A planet Some of these can be in different orders. Land is not often used in the context of a moon or planet, but can be.
The name given to a large area of level land on the Earth's surface is a plateau. A plateau also typically is elevated above the surrounding area. Such areas are also sometimes called tablelands.
A plan is a relatively flat area of land. Coastal plains are often home to large human populations. Inland plains are often used for farming.