In science there are many different types of energy from vague energies like bacic energy[Potential energy(chemical, nuclear, gravitational, or mechanical energy) & Kinetic Energy(temperature, electric or sound energy)] you can look at some energies being simalar in perspective or some energies can influence others in a positive or a negitive way. For a fictional perspective of chakra and chi/ki, they are natural energies inside of many creatures(including humans). They do have simalar purposes.