accident|noun|something that happens by chance or mistake; an unplanned, often negative event
effect|noun|the result or change caused by something (&ldquo;The storm had a serious effect on the economy.&rdquo;)
environment|noun|all surrounding things, conditions and influences that affect life; the natural world of land, sea, air, plants and animals
safe|adjective|not likely to be harmed or to cause harm; not in danger
stay|verb|to continue to be where one is; to remain; to not leave; to live for a time (&ldquo;They stayed in New York for two years.&rdquo;)
