INTERTWINE

[verb] - to twist or be twisted together, or to be connected so as to be difficult to separateThe town's prosperity is inextricably intertwined with the fortunes of the factory. [T]The trees' branches intertwined to form a dark roof over the path. [I]These bacteria have a tough outer shell made of intertwined sugar molecules. [T]The film's storyline is built up from several intertwining plots.