N5
あそぶ、あすぶ
Definition
to play, to enjoy oneself, to have a good time, to mess about (with alcohol, gambling, philandery, etc.), to be idle, to do nothing, to be unused, to go to (for pleasure or for study), to intentionally throw a ball to lower the batter's concentration...
N4
ごぞんじ
Definition
knowing, (an) acquaintance
N3
はんばい、ハンバイ
Definition
sales, selling, marketing
N2
バック
Definition
back, to go backwards, to reverse, to refund a customer, doggy style (sexual position)
N1
しめい
Definition
mission, errand, message