>>21732118Curls will, y'know, *curl*. Like, at least one full twist every few inches. Waves might do a full twist given enough length, but that might be mid-back or longer.
Another way to look at it is how large the groupings are. That is, how many strands clump together into the same shape. Wavy hair has the largest groups. Smaller groups correspond to tighter curls.
There isn't really a defined threshold between wavy and curly. It's like porn: you know it when you see it.
