What is a continent?
A continent is a large, continuous landmass on Earth's surface, typically separated by oceans or other geographical features. Continents are generally recognized as the primary divisions of land on the planet, and they are made up of various countries and territories. There are seven continents, which are:

    Africa
    Antarctica
    Asia
    Europe
    North America
    Australia (sometimes referred to as Oceania when including the islands of the Pacific Ocean)
    South America

The exact definition of a continent can vary, and sometimes the distinction between continents is not entirely clear-cut, as in the case of Europe and Asia, which are sometimes referred to as Eurasia because they share a continuous landmass. Nonetheless, continents are a fundamental way to categorize and understand the Earth's geography.
What about Zealandia?
Zealandia, sometimes referred to as the eighth continent, is a large submerged landmass in the southwest Pacific Ocean that is almost entirely underwater. It is believed to have been a part of the supercontinent Gondwana, which broke up millions of years ago. Zealandia includes New Zealand's North and South Islands, as well as the country's surrounding submerged continental shelf.

The debate over Zealandia's status as a continent highlights the complexity of defining continents and the fact that the concept of a continent can be somewhat subjective. However, it is not officially recognized as the eighth continent, and the traditional seven-continent model continues to be widely accepted.