Kinzhal is not a cruise missile.Isn't the Iskander a ballistic missile vs Kinzhal is a cruise missile? I'd imagine there are significant differences.
There is so much hype about hypersonic weapons lately that it can be easy to get confused with all the systems being developed.
Kinzhal fits into the same niche as weapons like the Kh-22/32.
It is a rocket missile designed for air to surface attacks with a conventional or nuclear warhead.
But Kinzhal uses solid instead of liquid fuel and has a more maneuverable warhead than the Kh-22/32.
It allegedly also achieves higher terminal velocities than those older missiles (Mach 10).
The Chinese retention of the larger first stage probably indicates that unlike the Russian Iskander they intend this missile to be used not only primarily against ships but against longer distance surface targets in the second island chain.