This is the 11528th most frequent German word.
steiger
"Steiger" in German refers to a "mine overseer" or "foreman" in mining.
Here, 'Steiger' refers to a mine foreman or overseer.
Ein Steiger arbeitet traditionell in einem Bergwerk.
A foreman traditionally works in a mine.
In this context, 'steigert' is a verb form meaning 'increases' or 'improves'.
Die Motivation meines Teams steigert sich jeden Tag.
The motivation of my team increases every day.
Here, 'Steigerung' is a noun meaning 'increase' or 'enhancement' derived from the verb 'steigern'.