pillar
The Spanish word 'pilar' translates to 'pillar' in English. The word 'pilar' in Spanish directly relates to an architectural structure that is typically tall and slender and is used as a support or a foundational element in a building. The same way, the English word 'pillar' not only refers to an architectural element but also has metaphorical uses where it signifies a person or thing regarded as reliably providing essential support for something.
The basic pillar of his career was discipline.
This sentence is using the word 'pilar' in its metaphorical sense to denote something that is crucial or fundamental. 'El pilar básico de su carrera' can translate to 'the basic foundation of his career'.
The pillars of the economy are in danger.
In this context, 'pilar' refers to fundamental elements, on which the economy is built. Again, 'pilar' is used metaphorically to denote the base or support of something, in this case the economy.
Pilar always wakes up early.
In this case 'Pilar' is used as a proper noun. It's a common female name in Spanish-speaking countries. It does not have any metaphorical or symbolic meaning here. We are simply stating that a woman named Pilar has the habit of waking up early.