It is called ballooning when a spider wraps its prey up.
butterfly
There are many insects that go through a stage where they live in a cocoon. This happens because they are usually changing from a worm like insect to a flying insect.
It is safe to leave the cocoon as it will survive. The cocoon is protection for the insect that is inside.
If you disturb a butterfly cocoon, it can kill the growing insect inside. It is important to leave the cocoon alone to let it develop naturally.
Cocoon for insect-appearance depend on type
A cocoon is typically considered alive if it shows signs of movement or activity such as fluttering, twitching, or shaking. If the cocoon appears dried out, discolored, or has an unpleasant odor, it may be a sign that the insect inside has died.
The correct spelling is "chrysalis" (insect pupa within a cocoon).
The weight of one cocoon can vary depending on the size and species of the insect that created it. On average, a silk cocoon can weigh around 500-900 milligrams.
This is likely the word cocoon (an insect's woven metamorphosis wrap, chrysalis).
A chrysalis is a cocoon containing the pupal stage of a flying insect.
Silk.