basis
noun
"Basis" refers to a fundamental or underlying support or foundation for something. You can describe it as the fundamental or essential element, or the starting point or foundation upon which something is built or established.
Example
- The scientific method is the basis for conducting experiments and forming theories in the field of physics.
- Trust and honesty are the basis of any strong and healthy relationship.
- A solid education in mathematics and statistics is the basis for success in data analysis.