This is the 9043rd most frequent Japanese word.
涼しい
Cool; refreshing.
涼しい here describes the comfortable, moderate temperature of the day.
今日は涼しいですね。
It's cool today, isn't it?
涼しい refers to an atmosphere that gives a refreshing or calm feeling.
この部屋は涼しい雰囲気があります。
This room has a cool atmosphere.
涼しい describes the pleasant coolness of the area near the river.