The term "love languages" refers to the ways in which people express and experience love. According to author Gary Chapman, there are five main love languages - words of affirmation, acts of service, receiving gifts, quality time, and physical touch. One's primary love language is the way they naturally express and interpret love through these different channels. It represents a person's preferred method for feeling loved and appreciated by others. Understanding one's own primary love language can help individuals communicate their needs more effectively in relationships, while also being aware of how to show love to those around them using their partner or friend's primary love language.