This is the 14471st most frequent Spanish word.
única
Unique; only.
In this sentence, 'única' is used as an adjective meaning 'the only' and highlights exclusivity.
Ella es la única persona que entiende cómo me siento.
She is the only person who understands how I feel.
Here, 'única' describes the noun 'experiencia,' denoting something special or one of a kind.
Es una experiencia única que nunca olvidaré.
It is a unique experience that I will never forget.
In this case, 'única' again functions as an adjective, emphasizing distinctiveness in design.