Insurance for businesses, rather than for individuals.
Personal insurance, or insurance used by individuals, probably pops to mind when someone says the world "insurance." These products include things like auto insurance or life insurance.
But a large part of the industry consists of policies meant to cover business clients. Products include things like workers' compensation and commercial property policies.
This part of the insurance industry also includes policies to protect against legal claims of various types. The broadest form of this coverage is called Commercial General Liability insurance.