upstream, the upstream portion of a river / upwind / uphill, the upper portion of a hill or other geographic feature / the head of a table, the seat of honor

(rare) the left-hand side of a drawstring on a fishing net

skillful, dexterous

good at

bridge

river

river, stream, brook

What you like to do, you will do well. To improve your skills in something, you must enjoy doing it.

a Japanese confectionery which is a famous regional food of Kyoto

a surname