As an Indian, for me it refers to both. "Spiciness" may bring heat to the tongue (chillies) or may be easy on the tongue but hell in your stomach (Andhra spicy)

As an Indian, for me it refers to both. "Spiciness" may bring heat to the tongue (chillies) or may be easy on the tongue but hell in your stomach (Andhra spicy). the latter is less likely to be taken as "heat" but it is more of a combination of spices.