This is the 10172nd most frequent Spanish word.
cimiento
Foundation or basis.
The word 'cimiento' refers to the physical foundation or base of a structure.
El cimiento de esta casa está hecho de concreto.
The foundation of this house is made of concrete.
'Cimiento' is used metaphorically to describe the base of an abstract concept, like a relationship.
La confianza mutua es el cimiento de una relación sólida.
Mutual trust is the foundation of a solid relationship.
Here, 'cimientos' refers to the remains of the base of a historical structure, applicable in archaeological contexts.