Refers to the act or skill of swimming. Often used in compounds like 泳ぎ方 (way of swimming) or 泳ぎに行く (go for a swim).
In summer I practice swimming at the pool every day.
His swimming is very fast.
My little brother is a good swimmer.
I learned to swim when I was a child.
When summer comes, we go swimming in the sea.
My dog can swim.
swimmer