It's important to note that "kha" is also a polite word for "I" or "me", but this use is more formal and less common in casual speech. In this context, it's typically used in conjunction with verbs or phrases that require a respectful subject, such as "kha, khon" (I, I am).
Therefore, when you encounter "kha" in Thai, it's crucial to understand the context to determine its meaning accurately.