In Indian classical music, the second-most prominent note of a raga is referred as samvadi. This could be misleading, as it may not necessarily refer to the second-most played note.
A samvadi is a note of special significance. A performer will typically try to emphasize the samvadi along with the vadi when improvising on a certain raga. The vadi and samvadi can be crucial in defining the raga at hand, and in some cases two ragas with the same arohana and avrohana can be distinguished only by the prominence of their sonant and consonant notes.