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 land where crops are grown is called a farm or a plantation. These areas are dedicated to cultivating a variety of crops for food production and agricultural purposes.
Monoculture.
These large landmasses are called "continents".
Landmass is a large continuous area of land, either surrounded by sea or contiguous with another landmass. Land area is the area in square kilometres of the land-based portions of standard geographic areas.
Plateau.
a large area of often with a large house on it
Antarctica
a broad area of flat or gently rolling land is called a plain.
Plateu
.
9,000000000000
Plateau
estate
a tract of land has no specific size, it is just an extended area
Plateau
I think this answer is plain.
Plateau