No they are not
cob webs and spiders
Either spinnerets or cribellum. Cribellum is less common.
Do you mean "spiders that make cobwebs"? Do you mean "poisonous" (like hemlock tea) or venomous (like cobra venom)? The word "cob" in "cobweb" just meant "spider." So a cobweb is just a spider web. Not all spiders are venomous. No spiders are known to be poisonous. Since black widows make webs, some "cob spiders" are highly venomous.
no, but SPIDERS spin WEBS.
with a broom
You can find cobwebs in abandoned mine shafts and strongholds.
Spiders make unique webs because they do not want other spiders coming into their webs. They have a unique shape, design, and scent to keep other away.
not all spiders have the ability to build homes in their webs
Furrow spiders belong to the genus Larinioides.These spiders weave orb webs. No spiders that weave orb webs are dangerous to humans.
Spiders keep their webs as long as they are alive.
Spiders spin webs not only for shelter but to capture their food. Insects, bugs, and other spiders get caught in these webs.
When ever they want to . But some do not make webs