I dont only use no. I use other words as well. But here are some examples from this morning:

Sitting on the babies backs when they are crawling (also use OFF)
Throwing food (also use stop)
Screeching (also use stop, all done)
Taking bins and dumping them
Hugging children until they fall backwards
Taking pacifiers from the babies
Trying to stick toys into others mouths
Poking childrens eyes

Oh geez, that is some from this morning. I understand that she is little, and most of these bahaviours are normal and expected. But I feel like when I tell her to stop, no, ect that there should be some sort of acknowledgment. Again, I dont know if it is just me and I have been lucky in the past and with my own.