Difference Between In and On with Comparison Chart Key ootn heart importance is a term used to depict an ensemble that is put on during the night or for special occasions. Heart represents love, emotion, and intimacy. Therefore, an ootn showcases an trendy and alluring outfit that reflects the love for clothing and enjoys the evening vibe. Sporting an ootn can enhance your confidence, make an impression, and display elegance and charisma. No matter it's a glamorous dress or a chic suit, the ootn guarantees that you catch everyone's attention and make a memorable impact at any night event.