Is spice is a common noun?

The noun 'spice' is a countable noun as a Word for a plant material used to flavor food. The plural noun is spices.

The noun 'spice' is an uncountable noun as a Word for something that adds interest or excitement.

Examples:

I don't know which spice to use. I'm not used to cooking with spices.

The downpour added some spice the company picnic.