It depends on who asked me to describe bitcoin cash and what the context was. In the context of this essay, bitcoin cash was activated via a hard fork. The bitcoin cash software is a modified fork of bitcoin which has changed several times since it was created. It now has 8mb blocks (I think) as well as single-sig covenants.

In the previous paragraph, the word fork is used in two different ways. When I say "modified fork of bitcoin" I mean what git users mean by the term fork: a piece of software that starts as a copy of another piece of software, but which can be modified without affecting the original. This meaning of fork has little in common with what the word fork means in the essay above, where it refers to modifying a set of rules.