This is the 3665th most frequent Spanish word.
núcleo
Core or nucleus.
Here, 'núcleo' refers to the geological core of the Earth, illustrating its scientific usage.
El núcleo de la Tierra es un lugar extremadamente caliente.
The Earth's core is an extremely hot place.
In this context, 'núcleo' symbolizes the central unit or foundation of a group, emphasizing its sociological application.
El núcleo de la familia está compuesto por los padres y los hijos.
The core of the family is composed of the parents and children.
Here, 'núcleo' is used metaphorically to refer to the central idea or main point of a discussion.