Superficial has so many applications, from scratches on the car to wounds on a person and even reputations and politics. Take as you will my comment on that word in the poem below: it was inspired by the crack in the wall pictured above.
Superficial they said
Nothing to worry about
But big enough for the rot to set in
And the mould to flourish
Among the damaged particles.
Superficial maybe
But marred nevertheless:
Opening a pathway to decline
To the rot and challenge
Of degradation and replacement
With a different life form.
Beware superficial
Opening up the pathway
To becoming
Seriously damaging.