This is the 426th most frequent Finnish word.
paikan
The Finnish word "paikan" is the genitive singular form of "paikka," meaning "place" or "location."
In this sentence, 'paikan' is used as the object form of 'paikka' (place), indicating a specific location in question.
Hän näytti minulle paikan, jossa voimme tavata.
He showed me the place where we can meet.
Here, 'paikan päälle' is an idiomatic expression, meaning 'to its place' or 'in its original location.'
Korjaa tämä ja laita kaikki tavarat takaisin paikan päälle.
Fix this and put all the items back in their place.
In this sentence, 'paikan päältä' is another idiomatic usage, meaning 'on the spot' or 'in-location,' directly from the specific place.