The difference between Chuck away and Junk

When used as verbs, chuck away means to discard, or throw away, whereas junk means to throw away.

Junk is also noun with the meaning: discarded or waste material.

check bellow for the other definitions of Chuck away and Junk

Chuck away as a verb (transitive):

To discard, or throw away.

Examples:

"This shirt has just about had it. I think I'll chuck it away."

Junk as a noun:

Discarded or waste material; rubbish, trash.
Junk as a noun:

A collection of miscellaneous items of little value.
Junk as a noun (slang):

Any narcotic drug, especially heroin.
Junk as a noun (slang):

The clothed genitalia.
Junk as a noun (nautical):

Salt beef.
Junk as a noun:

Pieces of old cable or cordage, used for making gaskets, mats, swabs, etc., and when picked to pieces, forming oakum for filling the seams of ships.
Junk as a noun (dated):

A fragment of any solid substance; a thick piece; a chunk.

Examples:

"rfquotek Lowell"

Junk as a verb (transitive):

To throw away.
Junk as a verb (transitive):

To find something for very little money (meaning derived from the term junk shop)

Examples:

"(On Facebook, a record collector wrote:) "The newest addition to my Annette Hanshaw collection, I junked this beautiful flawless E-copy within walking distance from my house."