This is the 1469th most frequent German word.
rest
"Rest" in German means "remainder" or "residue."
'Rest' is used here to mean 'leftover' or 'remaining portion' of something, in this case, cake.
Ich habe noch einen Rest Kuchen übrig.
I still have some leftover cake.
'Rest' refers to the 'remaining part' of a group, specifically the participants in this context.
Der Rest der Teilnehmer kommt später an.
The rest of the participants will arrive later.
Here, 'Rest' uniquely appears as 'rest' or 'repose', synonymous with relaxation or recovery after exertion.