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Core can be a noun, verb, or adjective, but is most often used as a noun to refer to the central or most important part of something (“the core of the issue,” “the Earth’s core”) or to the usually …

CORE definition: 1. the basic and most important part of something: 2. the hard central part of some fruits, such…. Learn more.

The core is made primarily of iron and nickel and has two parts — an inner solid core and an outer liquid core. The mantle is the layer of the Earth that overlies the core.

CORE meaning: 1 : the central part of a fruit (such as an apple) that contains the seeds; 2 : the central part of something

Aug 10, 2025 · "Core" represents centrality, importance, and functionality across various domains. Whether describing a fruit, a principle, or a technical component, its meanings emphasize its …

Of basic importance; essential: "Virtually all cultures around the world use the word heart to describe anything that is core, central, or foundational" (Robert A. Emmons).