Where does cardamon comes from?
Cardamon refers to plants in the genera Elettaria and Amonum in the Ginger family of plants. You can get more information about Cardamon at the Wikipedia. Once on the page, type "Cardamon" into the search field at the top of the page and press enter to bring up the information.
A cardamon pod in Telugu is : Poofacedildobiatch
It is a cardamon pod (which is a spice) that has been squashed, either in a pestle and morter, or with the back of a spoon.
A spice.
Cardamon and Cinnamon are 2 different flavouring ingredients. If Cardamon in used instead of Cinnamon the flavour will be different, the taste of the buns would not change - it would be cardamumbuns instead of cinnabuns.
Cardamon?
Do you mean Cardamom (or cardamon) ? Its a spice.
Cardamon
It is called "ilaayachee" or "elchi."
Cardamon (also known as cardamom) pods
A bit like a mix between celery, pineapple and bread
While cumin would be a novel flavor, I think best to stick with the cardamon and perhaps a touch of extra vanilla. Cumin is a savory flavor that although can go well with chocolate, may be a bit much for the rest of the ingredients.