worlds apart

best of both worlds

A combination of two seemingly contradictory benefits.

come apart at the seams

Synonym of fall apart.

drift apart

To lose contact, to lose one's friendship or closeness.

fall apart

To be emotionally in crisis.

grow apart

To gradually become estranged.

pick apart

To review or analyse in great detail

poles apart

Totally opposite.

tell apart

To perceive things as different, or to perceive their difference itself; to differentiate, distinguish, discriminate.