From Charles Sweigart:
I think we should start at the source definitions of the words first and then apply them to actual techniques.

Threaded;

1. To occur here and there throughout; pervade: “More than 90 geologic faults thread the Los Angeles area” (Science News).
To machine a thread on (a screw, nut, or bolt).
I chose only 2 of several definitions as they pertain to decorations found on glass. Both types of decoration start with a thread or string of glass.

Machine threading, as described by several previous posts, is the regular helical decoration of a single thread of glass on the outside of a round glass form.

The second type of threading is often seen on the outside of pieces produced by Durand, Fostoria & many others and consists of many single strands of glass in a non-regular manner or haphazard pattern applied over the outside if a round glass form. [see definition #1]

Reeded;

The term reeded is used in architecture, furniture and clock case descriptions regularly. It refers to a vertical carving or application of concave or convex elements to create the similar appearance to a stand of vertical reeds/plants in nature. IE. A vertical group of tubular structures.

The stems on Gordon Hancock’s glasses would be termed reeded.