Kern

The central point or main focus of something; used both literally and figuratively.

A city, geographic, or abstract center; slightly more technical or official than 'Mittelpunkt'.

The most important part of something, especially a project, text, or object; stresses importance rather than physical center.

The essence, main idea, or core content; often used in abstract, philosophical, or written contexts.

A scientific physics term meaning nuclear fission; not a synonym in the ordinary sense of 'Kern'.

A term for fruits with a core and seeds, such as apples and pears; not the general meaning of 'core'.

Energy obtained from the atomic nucleus; used in energy and physics contexts, not in the sense of 'center'.

Figuratively: the center of feelings, the most important part, or the 'heart' of something; more emotional and figurative than 'Kern'.

Not a single word but a fixed phrase meaning the main problem or key issue; used only figuratively.

The inside part of an object or space; very general and does not imply importance.

The main, largest, or most important part of a whole; stresses share or size rather than center.

A central place, institution, or office; often means headquarters or a coordination point.