star vs cosmos flower in Korean
별vs코스모스

별star
별 means a star in the sky. People use this word when talking about the night, space, or the sky. It is a common, easy word you can use in simple everyday sentences.
When to use star
코스모스cosmos flower
코스모스 means the cosmos flower, a common flower with thin stems and soft, colorful petals. People often use this word when talking about flowers in parks, gardens, or autumn fields. In everyday Korean, it usually means the flower, not the universe.
When to use cosmos flowerHow they differ
별 is a star in the night sky. 코스모스 is a flower that grows in fields or gardens.