Sectoral is the describing word you use when you are talking about one slice of the economy, or comparing those slices, rather than the whole country at once. Economists cut work into sectors — farming, factories, shops and services, government — and a sectoral question asks how this one part is doing. A sectoral wage deal is a pay agreement for one industry. Sectoral policy is a plan aimed at one kind of work, not at everyone. The word lives in news, government papers, and economics classrooms. You will almost never hear it in a café. It is dry and formal. Though actually, sector can also mean a slice of a circle in maths class, but sectoral in real life is almost always about the economy, not about geometry.