How do you normally you these 2 words?
I hate the word 'ya' and I dislike people answering me 'ya'! I find it rude that way... what ya ya ya... use YES!
This is my plain opinion which I find people saying 'ya' is very annoying. I also have the perception of using ya means you are not very firm and confident. I usually will tell people "YES" in any questions ask. I find the English language currently in Malaysia has been so mixed up, that people started to using the ya ya word every time they try to say YES.
This does not spare my girl, who is only 3 years old. I told her straight that if she doesn't answer me with proper YES and NO, I don't entertain her request. Not even nodding her head or shake her head. Now, does I sound like a military trained person?
Well, I don't know, but I really don't enjoy being answer with YA especially during FORMAL conversation. *period*