Difference between Sleek and Silky

SLEEK vs SILKY: NOUN

Similar in appearance or texture (especially in softness and smoothness) to silk.
A lofty Australian tree (Grevillea robusta) with silky tomentose lobed or incised leaves. It furnishes a valuable timber.
Covered with soft hairs pressed close to the surface, as a leaf; sericeous.
Hence, soft and smooth.
Of or pertaining to silk; made of, or resembling, silk; silken; silklike.
Suave or ingratiating.
Pleasantly agreeable, as to the ear.
Having a smooth, gleaming surface reflecting light
Resembling silk; smooth or lustrous.
Made of silk; silken.
Having a smooth, gleaming surface
Covered with or characterized by fine soft hairs or feathers.

Figuratively, to calm; soothe.
To smooth; remove roughness from.
In hat-making, to attach (fur) to felt by hand-work.
Technically— In currying and leather-dressing, to smooth the surface of (leather) by rubbing with an implement called a slicker.
To make smooth and glossy on the surface: as, to sleek or slick the hair.
To move in a smooth manner; glide; sweep. Compare slike.
In a sleek or slick manner; with ease and dexterity; neatly; skilfully.
Especially too well-groomed
Well-groomed and neatly tailored
Smooth; glossy; soft: as, sleek hair; a sleek skin.
Oily; plausible; insinuating; flattering: as, a sleek rogue; a sleek tongue.
Dexterous; skilful; neat in execution or action: as, a sleek or slick bowler.

Having the qualities or properties of silk, as smoothness and luster; sericeous.
Same as silken.
Smooth to the taste.
In botany, covered with long, very slender, close-pressed, glistening hairs; sericeous.

Fashionable, Elegantly, Compact, Stylishly, Elegant, Stylish, Silklike, Groomed, Smooth, Silken, Slick, Silky, Satiny, Satin, Glossy

Buttery, Luscious, Supple, Lustrous, Velvety, Everything, Soft, Silklike, Glossy, Slick, Sleek, Smooth, Satin, Satiny, Silken

Fashionable, Elegantly, Compact, Stylishly, Elegant, Stylish, Silklike, Groomed, Smooth, Silken, Slick, Silky, Satiny, Satin, Glossy

Buttery, Luscious, Supple, Lustrous, Velvety, Everything, Soft, Silklike, Glossy, Slick, Sleek, Smooth, Satin, Satiny, Silken

It is silky smooth, shiny and thickly rooted.
Vancouver spring bedeck tank tops and silky sheaths.
Put on a silky blouse, dress, or scarf.
It gives a soft, smooth, silky skin feel.
It also contained a few silky cane weevils.
Tender cake with a silky smooth lava center.
The soft, silky kitten played with a shoelace.
One thing the Hawaiian Silky is really skilled at is creating a silky smooth finish while maintaining moisturized hair.
They lack the soft silky plumage of the waxwings or silky flycatchers.
The silky is a large variety distinguished by its medium length silky hair.