The Ten Worlds.

https://sokaglobal.org/resources/study-materials/buddhist-study/the-basics-of-nichiren-buddhism-for-the-new-era-of-worldwide-kosen-rufu/chapter-2.html#:~:text=The%20world%20of%20voice-hearers%20is%20the%20life%20state%20attained,their%20own%20observations%20and%20effort.