N5
いろいろ
Definition
various, various colors (colours)
N4
おと、ね、おん
Definition
sound, noise, report, note, fame, Chinese-derived character reading
N3
いた
Definition
board, plank, sheet (of metal), plate (of glass), pane, slab, cutting board, chopping board, chef (esp. of high-end Japanese cuisine), cook, stage (i.e. at a theatre)
N2
おととい、おとつい、いっさくじつ
Definition
day before yesterday
N1
あふれる
Definition
to overflow, to brim over, to flood