I think the respectable visitor who responded to the OP first of all could explain it better. However, the difference of pronunciation lies in the vowel "a" in the spelling of both words. In the name of goddess Kali, "a" is pronounced as long vowel "aa," while in the name of flower bud, it is pronounced as short vowel "a" and the word sounds like "cully."
I wondered why the Frisbee was getting bigger, and then it hit me.