A பின்வருநிலை அணி type: several different words repeat across a verse, all giving the same meaning.

Where சொல் பின்வருநிலையணி keeps the word and shifts the meaning, பொருள் பின்வருநிலையணி does the opposite - keeps the meaning steady and shifts the word each time it returns.

Several different words for the same idea, each reinforcing it as the verse repeats them.