N5
いち
Definition
one, best, first, foremost, beginning, start, bottom string (on a shamisen, etc.)
N4
じしん、ない、なえ、じぶるい
Definition
earthquake
N3
べん
Definition
convenience, service, facility, accommodation, excreta (esp. faeces), excrement, stool
N2
ひかくてき
Definition
comparative, relative
N1
しゅさい
Definition
sponsorship (i.e. conducting under one's auspices), promotion, organizing, organising, hosting, staging