The difference between Attercop and Spider

Attercop as a noun:

(obsolete except in dialects) A spider.

Attercop as a noun:

(obsolete except in dialects) A peevish or ill-natured person.

Spider as a noun:

Any of various eight-legged, predatory arthropods, of the order Araneae, most of which spin webs to catch prey.

Spider as a noun (Internet):

A program which follows links on the World Wide Web in order to gather information.

Spider as a noun (chiefly, Australia, and, New Zealand):

A float (drink) made by mixing ice-cream and a soda or fizzy drink (such as lemonade).

Spider as a noun (slang):

A spindly person.

Spider as a noun (slang):

A man who persistently approaches or accosts a woman in a public social setting, particularly in a bar.

Spider as a noun (snooker, billiards):

A stick with a convex arch-shaped notched head used to support the cue when the cue ball is out of reach at normal extension; a bridge.

Spider as a noun (cookware, US, UK, chiefly, historical, and, now, dialectal):

A cast-iron frying pan with three legs, once common in open-hearth cookery.

Spider as a noun (cooking):

Implement for moving food in and out of hot oil for deep frying, with a circular metal mesh attached to a long handle; a spider skimmer

Spider as a noun:

A part of a crank, to which the chainrings are attached

Spider as a noun (slang):

Heroin (street drug).

Spider as a noun (music):

Part of a resonator instrument that transmits string vibrations from the bridge to a resonator cone at multiple points.

Spider as a noun:

A skeleton or frame with radiating arms or members, often connected by crosspieces, such as a casting forming the hub and spokes to which the rim of a fly wheel or large gear is bolted; the body of a piston head; or a frame for strengthening a core or mould for a casting.

Spider as a noun (fly fishing, England):

a soft-hackle fly

Spider as a noun (sports):

The network of wires separating the areas of a dartboard

Spider as a verb:

To move like a spider.

Spider as a verb:

To cover a surface like a cobweb.

Spider as a verb (Internet, of a computer program):

To follow links on the World Wide Web in order to gather information.