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foundation (noun)
The foundation is the solid base upon which a building or structure is constructed to support its weight. It is also used metaphorically to describe the fundamental principles, ideas, or base layer upon which something else is built or developed.
Think of 'FOUND-ation'. You have to FOUND (start) the building at the bottom. The foundation is what you FOUND the build...
Using 'foundation' as a verb. → He founded the charity.
Saying 'foundations' for makeup. → I am wearing foundation.
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