Expressions (phrases, clauses, etc.), Nounback pain; backache

Nounback-to-back; facing in opposite directions · two sides of the same coin; inextricably linked (esp. with something dangerous or undesirable) · on bad terms; at odds

Expressions (phrases, clauses, etc.), Godan verb with 'su' endingto bare one's back

Expressions (phrases, clauses, etc.), Godan verb with 'su' endingto rinse one's back

Expressions (phrases, clauses, etc.), Godan verb with 'su' endingto push someone (towards); to encourage someone