Adverb: When it modifies a verb, adjective, or another adverb, it describes the manner in which something is done.
* Example: He strolled *leisurely* through the park. ("Leisurely" modifies the verb "strolled")
Adjective: When it modifies a noun, it describes a quality of the noun.
* Example: They took a *leisurely* walk. ("Leisurely" modifies the noun "walk")
In both cases, "leisurely" conveys a sense of slowness, relaxation, and lack of urgency.