I suspect many hunters think of pinch points and funnels as being one in the same, and there's really no problem in doing so. In both cases, we're talking about ground features that "encourage" deer to take a certain path when moving from one area to the next. Or, another way of looking at it, a "pinch point" is something that can "funnel" deer movement to specific area where you're very likely to see them.
The image below is one that I just grabbed at random to serve as an example. Being prey animals, deer prefer to travel under or near cover rather than leaving themselves exposed for more lengthy periods to the eyes of predators. When you're a prey animal, it's all about survival. For this reason, deer will often choose to move between areas of cover at "points" that offer the shortest routes without cover. And even when cover is limited, such as along a grown-up fence line that crosses a pasture, you can bet that's the route they will prefer to take to cross between areas of thick cover that exist on either side of that pasture.
There are many other examples that I'm sure others will share.
Obviously, satellite technology is of great benefit to hunters today. In just a few minutes, you can identify funnels and pinch points that might have taken hunters in the past, a season or two to locate.