Let's look at an English example first ...
CART is a "ghost" of CARROTS .. and so is ROT and CARS and COTS
a w
They are what's left when some of the letters of a word have b ow l n
ay.
Here's a German example ......
[1] Which German word has NIL as one of its many ghosts ?
Ok ...here's one of them ... LANGWEILIG
and here's three more ....
INDIVIDUELL ANSPIELEN UNBILLIG
so ...see if you can find some others that have NIL as their ghost.
And here's some more for you to try ...
I show you the ghost .... and you try to find what it is the ghost of ....
[2] NOSE
[3] EEL
[4] NIT
[5] RUST
[6] ARC
[7] HUG
[8] BRA
[9] WISE
[10] ONE
You don't have to "get" my words .... each of those ghosts will have several words that will fit .
And after all that brainboggling stuff ...a song ! And a relevant song too !