Pronombres y determinantes - Pronombres relativos nominales

used to represent an entire idea, concept, or clause within a sentence that acts as the subject or object of the verb or preposition

lo que

used to represent a clause, idea, or concept that acts as the subject or object of the verb or preposition

cuál

used to represent the time when something happens as the subject or object of verb or preposition

cuándo

used to represent the place where something took place as the subject or object of verb or preposition

donde

used to represent a person as the subject or object of verb or preposition in a sentence

quién

used to introduce the reason for an action as the subject or object of the verb or preposition

por qué

used to represent the manner, method, or means of fulfilling an action as the subject or object of verb or preposition

cómo

used to represent the person who receives the action of the verb in the relative clause as the subject or object of verb or preposition

quien

used to represent anything or everything as the subject or object of verb or preposition

lo que sea

used as a placeholder in the sense of any one that or any one of those that

cualquiera

used as a placeholder to refer to the time something happens

Siempre que

used as a place holder to refer to a place

dondequiera que estés

used as a placeholder in the sense of any person who or anyone who

quien sea

used as a placeholder of object of verb or preposition in the sense of any person who

quienquiera