The term 'hollow cores' is associated with which types of synthetic ropes?

The term 'hollow cores' is correctly associated with Duraplex and Tenex ropes because these types of synthetic ropes are designed with a hollow center. This construction allows for various enhancements, such as increased flexibility, reduced weight, and the ability to add additional materials or lines if needed. The hollow core structure can also make the rope more versatile for applications such as rigging, where managing weight and flexibility is important.

In contrast, wire ropes typically consist of steel strands twisted around one another, which do not incorporate a hollow structure. Natural fiber ropes, made from fibers like jute or manila, and compacted ropes, where fibers are densely packed together, also lack the specific hollow core design that is characteristic of certain synthetic ropes.