This is the 18069th most frequent Korean word.
수영
Swimming
In this sentence, '수영' (swimming) is used as a noun and serves as the direct object of the verb '합니다' (to do).
저는 매일 아침에 수영을 합니다.
I swim every morning.
Here, '수영' functions as a noun, forming part of the predicate that describes the hobby.
나의 취미는 수영이다.
My hobby is swimming.
In this example, '수영하면서' uses '수영' in the gerund form to indicate the action of swimming occurring simultaneously with enjoying the sea.