I use the following words:
"jump"--any kind of jump--single, spread, broad, bar, or high
"hoop"--tire or NADAC hoop
"walk it"--dog walk and A frame
"feet"--reminder for 2o2o end behavior for dog walk and A frame (hopefully eventually not necessary)
"teeter"--teeter-totter
"tunnel"--tunnel
"hop up"--table
"weeeaaave"--weave poles
There are a lot of agility obstacles starting with "t," so I think it's a good idea to use cues for some of those that don't start with "t." I also use "go on" to mean keep going in the same direction, "Faith" to turn her head toward me, and "out" to mean increase lateral distance.
With Faith and I think with most dogs, though, nonverbal cues are generally more important than verbal ones in agility. If my body is telling her to take the dog walk in a dog walk/tunnel discrimination and my mouth tells her "tunnel," she will almost certainly take the dog walk.