much-advertised product - negative convexity
- natural disaster insurance
- natural division of labour
- natural economy
- natural education
- natural entity
- natural environment
- natural father
- natural fold
- natural form of commodity
- NATURAL GAS
- natural gas company
- Natural Gas Distribution
- natural gas industry
- natural greenhouse effect
- natural guardian
- natural hazards
- natural increase
- natural index
- natural indicator
- natural indice
- natural insurance
- natural interest rate
- natural justice
- natural law
- natural law theory
- Natural logarithm
- natural loss
- natural loss of goods
- natural market forces
- natural measurement
- natural monopoly
- natural number
- natural obligation
- natural parents
- natural person
- natural premium
- natural price
- natural product
- natural propensities
- natural rate hypothesis