The difference between Slender and Thin

When used as adjectives, slender means thin, whereas thin means having little thickness or extent from one surface to its opposite.

Thin is also noun with the meaning: a loss or tearing of paper from the back of a stamp, although not sufficient to create a complete hole.

Thin is also adverb with the meaning: not thickly or closely.

Thin is also verb with the meaning: to make thin or thinner.

check bellow for the other definitions of Slender and Thin

Slender as an adjective:

Thin; slim.

Examples:

"A rod is a long slender pole used for angling."
Slender as an adjective (figurative):

meagre; deficient

Examples:

"Being a person of slender means, he was unable to afford any luxuries."
Slender as an adjective (Gaelic languages):

Palatalized.

Thin as an adjective:

Having little thickness or extent from one surface to its opposite.

Examples:

"'thin plate of metal; thin paper; thin board; thin covering"
Thin as an adjective:

Very narrow in all diameters; having a cross section that is small in all directions.

Examples:

"'thin wire; thin string"
Thin as an adjective:

Having little body fat or flesh; slim; slender; lean; gaunt.

Examples:

"thin person"
Thin as an adjective:

Of low viscosity or low specific gravity, e.g., as is water compared to honey.
Thin as an adjective:

Scarce; not close, crowded, or numerous; not filling the space.

Examples:

"The trees of a forest are thin; the corn or grass is thin."
Thin as an adjective (golf):

Describing a poorly played golf shot where the ball is struck by the bottom part of the club head. See fat, shank, toe.
Thin as an adjective:

Lacking body or volume; small; feeble; not full.
Thin as an adjective:

Slight; small; slender; flimsy; superficial; inadequate; not sufficient for a covering.

Examples:

"a thin disguise"

Thin as a noun (philately):

A loss or tearing of paper from the back of a stamp, although not sufficient to create a complete hole.
Thin as a noun:

Any food produced or served in thin slices.

Examples:

"chocolate mint thins"

"potato thins"

Thin as a verb (transitive):

To make thin or thinner.
Thin as a verb (intransitive):

To become thin or thinner.
Thin as a verb:

To dilute.
Thin as a verb:

To remove some plants or parts of plants in order to improve the growth of what remains.

Thin as an adverb:

Not thickly or closely; in a scattered state.

Examples:

"seed sown thin"