Line
ChainKnotsNetsRopeStringWire

chains/fence/T.Chains2007_15.jpg
Line formed by conecting a series of links together.
knots/frayed/T.Knot_20081108_130318_Bodega_Bay_BCX_7029.jpg
Formed by running a line through one or more loops and then tightening that line or loops.
nets/T.Net_20081107_131628_Cheney_Creek_Bodega_Bay_BCX_6971.jpg
A line or rope can be formed into a net by knoting in a criss-crossed manner. Modern nets can be cast or stamped from plastic.
rope/T.Rope20080726_FestOfSail_121924_1624BCX.jpg
Tensile strength only with no compressive strength
string/T.SacramentoTrainMuseum2008_9518B.jpg
Actual, Not Theory
wire/electrical/T.WireboxTurtleBeachLodgeCostaRica20080909_3546BCX.jpg
Rope or string made of metal