Is chain block is the other name for manual chain hoist or its different??????
It's another name for chain hoist, a tackle with an endless chain for hoisting a heavy load by hand. A block chain is more of a detail, the alternate chain links are broad blocks connected by thin side links pivoted to the ends of the blocks, used with sprocket wheels like in a bicycle. .
Its a chain hoist that uses the block-and-tackle technique to give the hoist operator that huge mechanical advantage to lift a heavy load attached to the hook at the bottom of the chain hoist.
It just the another name of chain hoist imply Electric Chain are electrically powered heavy duty machines designed for lifting heavy objects that are not capable by the human being.