The term 'the gaining of knowledge' can be summarized as LEARNING, which is an 8-letter word. LEARNING is the process of acquiring new skills, knowledge, behaviors, values, and attitudes. It is a lifelong process that involves gaining understanding and insight into the world around us. LEARNING can take place in formal or informal settings, such as in a classroom, through self-study, or through experience. It is an essential part of personal development and growth.