swamp A permanently waterlogged area in which there is often associated tree growth, e.g. mangroves in hot climates; marsh An periodically inundated area of low ground having shrubs and trees, with or without the formation of peat
tide The periodic rise and fall of the water resulting from gravitational interaction between the sun, moon and earth. In each lunar day of 24 hours and 49 minutes there are two high tides and two low tides
