The Latin plural term used for Venus's continent-like highlands is terrae.
In planetary nomenclature, terra means a broad landmass or highland region, and terrae is its Latin plural. The terminology reflects the appearance of Venus's large elevated provinces in radar maps, where features such as Aphrodite Terra and Ishtar Terra can resemble continents on Earth.
That resemblance should not be taken too literally. Venus does not have Earth's global system of moving tectonic plates, and its highlands are not continents floating on oceanic crust. They are broad geological provinces shaped by volcanism, mantle activity, uplift, faulting, and intense deformation. Highlands cover roughly 10% of Venus's surface and are generally defined as areas more than 2 kilometres above the planet's median radius.
The alternatives describe different feature classes. Chasmata are deep, elongated valleys or fractures; montes refers to mountains or mountain ranges; and planitiae refers to low plains. Terrae is therefore the specific plural label for continent-like elevated regions, not a general synonym for every high point on Venus.