There seems to be inconsistency in how I spell certain words, and how people interpret them. Please take note as I explain my spelling and intended meaning so we can more clearly communicate.
'Ah' indicates comprehension. It can be used sarcastically as well. Example usage includes Ah, I get it now or the ever-scarring Ah. So you're stupid, is that it?
'Aw' indicates disappointment or embarrassment. Example usage includes Aw, I wish I could have gone on the train ride , or perhaps Goofy's simple Aw, shucks.
'Awh' is an exclamation to indicate something complimentary (or to be followed by something nice or complimentary). You might see me write it as Awh, that bunny is adorable! Aren't you a cute bunny? Yes you are! Yes you are a cute bunny! A-show-bee-doe-boe! A-zhow-boe-doe-boe! Good bunny! Look at your floppy ears! Zha-buh-nee-wab-it!
Occasionally it's just Awh! , so I'll leave it to you to fill in the rest.