Cryptocurrency uses the blockchain technology to run the system in crypto world, and it may not survive without the technology. While blockchain seems possible to survive without cryptocurrency because it is a technology. A technology can be adapted to many sectors in our life. However, crypto and blockchain can not be separated from one another. They will continue to develop and support one another. They have a very related history, it causes a strong correlation between them.
I very agree with this statement. Obviously, blockchain consists the vessel and delivers the means that cryptocurrency needs to work. However, crypto are the money- profit that lubrigates the machine to work!