patchouli

This term refers to both the botanical source and the resulting fragrance. When referring to the oil or the scent, it is treated as an uncountable mass noun, describing a heavy, musky, and earthy aroma often associated with bohemian culture or incense.

In a botanical context, it can be used as a countable noun when referring to individual plants, though it is more frequently used as an uncountable noun to describe the plant species in general.