epacris: any heathlike evergreen shrub of the genus Epacris grown for their showy and crowded spikes of small bell-shaped or tubular flowers
entity: that which is perceived or known or inferred to have its own distinct existence (living or nonliving)
storage ring: container consisting of a set of magnets set in a doughnut-shaped ring around which charged particles from an accelerator can be kept circulating until they are used