stake B2

/steɪk/ A share or financial interest in a business or situation.

thick A2

/θɘk/ Having a large distance between opposite surfaces; not thin.

stack B2

/ˈstæk/ A neat pile of things placed one on top of another.

sauna C1

/ˈsɔː.nə/ A hot room where people sit to sweat and relax, often with steam.