The playground 'gives every appearance of' being a safe place for children [=the playground appears to be a safe place for children], but a tragic accident occurred there recently.
He has announced that this will be his final/last 'appearance' with the band. [=the last time that he will perform in public with the band]
I wasn't expecting him to come and was surprised by his sudden 'appearance'. [=I was surprised when he suddenly appeared/arrived]
(..) ... weapons ... a computer program? Is it really so hard to believe? Your clothes are different. The plugs in your body are gone. Your hair has changed. Your appearance now is what we call "residual self-image." It is the mental projection of your digital self. This isn't real? What is "real"? (..)1999 The Matrix