Claggy vs. Tenacious: What's the Difference?

Claggy and Tenacious Definitions
Claggy
(of mud, tar, glue or the like) Sticky or tacky.
Tenacious
Extremely persistent in adhering to or doing something; stubborn or relentless
"tenacious defenders of their harsh and pitiless land" (Dee Brown).
Claggy
(specifically, of a roof in a mine) Adhesive, having coal clinging to it.
Tenacious
Characterized by extreme persistence; relentless or enduring
Tenacious detective work.
Tenacious superstitions.
Claggy
Adhesive; - said of a roof in a mine to which coal clings.
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Tenacious
Holding together firmly; cohesive
A tenacious material.
Tenacious
Clinging to another object or surface; adhesive
Tenacious lint.
Tenacious
Tending to retain; retentive
A tenacious memory.
Tenacious
Clinging to an object or surface; adhesive.
Tenacious
Unwilling to yield or give up; dogged.
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Tenacious
Holding together; cohesive.
Tenacious
Having a good memory; retentive.
Tenacious
Holding fast, or inclined to hold fast; inclined to retain what is in possession; as, men tenacious of their just rights.
Tenacious
Apt to retain; retentive; as, a tenacious memory.
Tenacious
Having parts apt to adhere to each other; cohesive; tough; as, steel is a tenacious metal; tar is more tenacious than oil.
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Tenacious
Apt to adhere to another substance; glutinous; viscous; sticking; adhesive.
Tenacious
Niggardly; closefisted; miserly.
Tenacious
Holding stoutly to one's opinion or purpose; obstinate; stubborn.
Tenacious
Stubbornly unyielding;
Dogged persistence
Dour determination
The most vocal and pertinacious of all the critics
A mind not gifted to discover truth but tenacious to hold it
Men tenacious of opinion
Tenacious
(of memory) having greater than average range;
A long memory especially for insults
A tenacious memory
Tenacious
Sticking together;
Two coherent sheets
Tenacious burrs