Detritus (noun): waste or debris of any kind. Cf., discarded matter, refuse, litter, flotsam & jetsam, dross, chaff. Maybe sediment (noun): matter that settles to the bottom (usually of a liquid). Cf., dregs, lees, residue, alluvium. The difference, to me, is we can’t help but produce sediment. Just our being generates a trail of sediment everywhere we go. Detritus, however, is often a willful act of discarding, throwing off that which we no longer want. Cigarette butts are surely detritus.
