N4 - 背中せなか
back of the body
N2 - 背負うせおう
to be burdened with, to carry on back or shoulder
N1 - 背負うしょう
to be burdened with, to carry on back or shoulder
N1 - 背くそむく
to run counter to, to go against, to disobey, to infringe
N1 - 背景はいけい
background, scenery, setting, circumstance