elbow
to rub elbows with

rub
to give something a good rub

rub along
they're rubbing along

rub away
esfregar até desaparecer

rub down
lixar

rub in
don't rub it in!

rub off
to rub the rust off

rub on
prosperar

rub out
safar

rub up
her German needs to be rubbed up

rub up against
conviver com

rub-a-dub
rufar de tambor

rust
to rub the rust off