levitation – n. making something rise into the air

propulsion – n. the force produced by a system for moving, or propelling, a vehicle

emission – n. the act of producing or sending out something (such as energy or gas) from a source; something that is sent out or produced by something

commercial –adj. concerned with earning money

turbulence – n. an unsteady or violent movement of air or water

infrastructure – n. the basic equipment and structures (such as roads and bridges) that are needed for a country or region

roaring – adj. very load active or strong