Pure risk, also called absolute risk, is a category of threat that is beyond human control and has only one possible outcome: loss. Pure risk includes such things as natural disasters, fire or untimely death.
There are four basic ways of dealing with risk: reduce it, avoid it, accept it or transfer it. Pure risk is often transferred by purchasing insurance, which transfers the risk to an insurance company.
When a company provides insurance for a pure risk, they are engaging in speculative risk, hoping that the customer will not experience a loss until the after the company has profited from the risk transfer.