This is the 14756th most frequent Russian word.
плавания
The Russian word "плавания" means "swimming" or "voyages" depending on context.
In this sentence, "плаваниями" is used in the instrumental plural form, indicating the act of swimming or sailing.
Я всегда наслаждаюсь плаваниями в открытом море.
I always enjoy swims in the open sea.
Here, "плаванию" is in the dative singular form, referring to the action of swimming in the context of competition.
Спортивная команда готовится к соревнованиям по плаванию.
The sports team is preparing for the swimming competition.
In this sentence, "плавания" is in the genitive singular form, denoting the concept of swimming or moving underwater.