How do I say hello to my cat?
Try turning to the side rather than directly facing the cat, avoiding prolonged eye contact and making yourself smaller by sitting or kneeling down. Avoid reaching out to pet or bending over the top of a cat to say hi. If a cat wants to investigate, try reaching out your hand or an object with your smell on it.
How do you say no in cat language?
As you catch your cat in a place you don't want her, pick her up, and place her just outside the border or where she's allowed. Firmly say "no" as you do this. If you happen to be at the side of the border she's not allowed to cross, you can push her back and say "no".