The verbs enjoy and relish are close in meaning, but relish has far more flavor. To relish something is to enjoy it with marked appreciation or keen delight. Consider the noun relish, a condiment that one adds to a dish to impart flavor and—we hope—enhance enjoyment. The idea of savoring a special taste or flavor carries over to the verb, even when the tastes and flavors are figurative rather than literal. When someone relishes an experience, for instance, they are making a point to appreciate the distinctive aspects (flavors) of that particular encounter or activity.
When something is unique, it is one of a kind. When something is one of a kind because it is truly better than the rest, it is nonpareil. The adjective nonpareil means "having no equal; peerless," and it suggests exceptional quality or skill. A nonpareil singer, for instance, is one so proficient, they stand alone in their class. Nonpareil can also be used as a noun to refer to a person or thing having no equal, and, in the plural, to those colorful sprinkles that top various kinds of sweet treats, making them just a little better than the rest.
The noun influence refers to a type of unofficial power to direct the actions or thoughts of others; it typically implies deference to one's character, ability, or station. The noun leverage also refers to a type of power, but power of a less mysterious nature, usually derived from an advantage. A company that has the advantage of being the only commercial enterprise in a town might have considerable leverage, or power, in its union negotiations. Leverage comes from the word lever, a rigid bar used to move an object by applied force at a certain point. Perhaps unsurprisingly, the word leverage commonly appears in discussion of politics and business.