The term 'Spice of Life' is a metaphor for the VARIETY and VERVE that make life interesting. VARIETY, which has 7 letters, refers to the range of experiences and activities that make life enjoyable. VERVE, which has 5 letters, is a term used to describe enthusiasm, energy, and liveliness. Together, these two words capture the idea that life is more enjoyable when it is full of different experiences and activities, and when we approach them with enthusiasm and energy.