park; public park
General term for a public park or garden. The spelling 公苑 is occasionally seen in proper names.
週末は家族と公園でピクニックをした。
We had a picnic with the family at the park on the weekend.
この公園は夜になると静かになる。
This park becomes quiet at night.
The children are playing in the park.
I take a walk in the park every morning.
My father used to take me to the park every weekend.
We had a picnic with the family in the park.
公園 is the common everyday word for a public park, whereas 遊園 is a rarer, more formal term often implying a space designed for children's play.
公園 specifically means a public park for everyday use, while 園 is a broader, more literary word that often appears inside compound names like 花園 or 桃園.
parks section; parks division
children's park; children's playground