učešće

1. participation; involvement
   Učešće na takmičenju je besplatno. — Participation in the competition is free.
   On je negirao svako učešće u prevari. — He denied any involvement in the fraud.
2. (for a loan, purchase) down payment
   Za stambeni kredit treba učešće od dvadeset odsto. — A mortgage requires a twenty percent down payment.
3. (in economics, statistics) share; proportion
   Učešće industrije u ukupnoj proizvodnji se povećalo. — The share of industry in total output has increased.

In the sense "participation" it takes u or na + locative.