This is the 85th most frequent Catalan word.
s
The Catalan word "s" is a reflexive pronoun meaning "himself, herself, itself, oneself, themselves," or is used as part of pronominal verbs.
'és' is the third singular person present of the verb 'ser', meaning 'is', serving as a copula linking the subject 'el cel' with the predicate 'blau'.
El cel és blau.
The sky is blue.
's'' is a reflexive pronoun used with reflexive verbs like 'aixecar-se', indicating that the subject performed the action onto himself.
El Jordi s'ha aixecat d'hora avui.
Jordi got up early today.
'són' is the present third person plural form of the verb 'ser', meaning 'are', used to describe the subject 'aquestes sabates'.