Thread vs. Yarn

Difference Between Thread and Yarn
Threadnoun
A long, thin and flexible form of material, generally with a round cross-section, used in sewing, weaving or in the construction of string.
Yarnnoun
(uncountable) A twisted strand of fiber used for knitting or weaving.
Threadnoun
A continued theme or idea.
All of these essays have a common thread.I’ve lost the thread of what you’re saying.Yarnnoun
(nautical) Bundles of fibers twisted together, and which in turn are twisted in bundles to form strands, which in their turn are twisted or plaited to form rope.
Threadnoun
(engineering) A screw thread.
Yarnnoun
(countable) A story, a tale, especially one that is incredible.
Threadnoun
A sequence of connections.
Yarnverb
To tell a story or stories.
Threadnoun
The line midway between the banks of a stream.
Yarnnoun
the act of giving an account describing incidents or a course of events;
his narration was hesitantThreadnoun
(computing) A unit of execution, lighter in weight than a process, usually sharing memory and other resources with other threads executing concurrently.
Yarnnoun
a fine cord of twisted fibers (of cotton or silk or wool or nylon etc.) used in sewing and weaving
Threadnoun
(Internet) A series of messages, generally grouped by subject, in which all messages except the first are replies to previous messages in the thread.
Yarnverb
tell or spin a yarn
Threadnoun
A filament, as of a flower, or of any fibrous substance, as of bark.
Threadnoun
(figurative) Composition; quality; fineness.
Threadverb
(transitive) To put thread through.
thread a needleThreadverb
(transitive) To pass (through a narrow constriction or around a series of obstacles).
I think I can thread my way through here, but it’s going to be tight.Threadverb
To screw on, to fit the threads of a nut on a bolt
Threadnoun
a fine cord of twisted fibers (of cotton or silk or wool or nylon etc.) used in sewing and weaving
Threadnoun
any long object resembling a thin line;
a mere ribbon of landthe lighted ribbon of trafficfrom the air the road was a gray threada thread of smoke climbed upwardThreadnoun
the connections that link the various parts of an event or argument together;
I couldn't follow his train of thoughthe lost the thread of his argumentThreadnoun
the raised helical rib going around a screw
Threadverb
to move or cause to move in a sinuous, spiral, or circular course;
the river winds through the hillsthe path meanders through the vineyardssometimes, the gout wanders through the entire bodyThreadverb
pass a thread through;
thread a needleThreadverb
remove facial hair by tying a fine string around it and pulling at the string;
She had her eyebrows threadedThreadverb
pass through or into;
thread tapethread filmThreadverb
thread on or as if on a string;
string pearls on a stringthe child drew glass beads on a stringthread dried cranberries