\ExplSyntaxOn % Use tilde (~) for spaces.

\addto\captionsspanish
  {
    % Monster basics
    \renewcommand\armorclassname{Clase~de~Armadura}
    \renewcommand\hitpointsname{Puntos~de~Golpe}
    \renewcommand\speedname{Velocidad}
    % Monster ability scores
    \renewcommand\strstatname{FUE}
    \renewcommand\dexstatname{DES}
    \renewcommand\constatname{CON}
    \renewcommand\intstatname{INT}
    \renewcommand\wisstatname{SAB}
    \renewcommand\chastatname{CAR}
    % Monster details
    \renewcommand\skillsname{Habilidades}
    \renewcommand\dimmname{Inmunidad~a~daño}
    \renewcommand\dvulname{Vulnerabilidad~a~daño}
    \renewcommand\dresname{Resistencia~a~daño}
    \renewcommand\cimmname{Inmunidad~a~estados}
    \renewcommand\savesname{Tiradas~de~salvación}
    \renewcommand\sensesname{Sentidos}
    \renewcommand\defaultsensesname{Percepción~pasiva~10}
    \renewcommand\languagesname{Idiomas}
    \renewcommand\challengename{Desafío}
    \renewcommand\xpname{PE}
    % Monster attack
    \renewcommand\unitsname{pies}
    \renewcommand\weaponname{arma}
    \renewcommand\spellname{Hechizo}
    \renewcommand\meleeattackname{Ataque~con~|1|~cuerpo~a~cuerpo}
    \renewcommand\rangedattackname{Ataque~con~|1|~a~distancia}
    \renewcommand\meleeorrangedattackname{Ataque~con~|1|~cuerpo~a~cuerpo~o~a~distancia}
    \renewcommand\orname{o}
    \renewcommand\tohitname{|1|~a~impactar}
    \renewcommand\defaulttargetsname{un~objetivo}
    \renewcommand\reachname{alcance}
    \renewcommand\rangename{alcance}
    \renewcommand\hitname{Impacto}
    \renewcommand\damagename{daño}
    \renewcommand\plusname{y}
    % Spell levels
    \renewcommand\spellcantripsname{Trucos}
    \renewcommand\spellfirstlevelname{Nivel~1}
    \renewcommand\spellsecondlevelname{Nivel~2}
    \renewcommand\spellthirdlevelname{Nivel~3}
    \renewcommand\spellfourthlevelname{Nivel~4}
    \renewcommand\spellfifthlevelname{Nivel~5}
    \renewcommand\spellsixthlevelname{Nivel~6}
    \renewcommand\spellseventhlevelname{Nivel~7}
    \renewcommand\spelleighthlevelname{Nivel~8}
    \renewcommand\spellninthlevelname{Nivel~9}
    % Spell slots
    \renewcommand\spellatwillname{a~voluntad}
    \renewcommand\spelloneslotname{1~espacio}
    \renewcommand\spelltwoslotsname{2~espacios}
    \renewcommand\spellthreeslotsname{3~espacios}
    \renewcommand\spellfourslotsname{4~espacios}
    % Innate spellcasting
    \renewcommand\innateatwillname{A~voluntad}
    \renewcommand\numberperdayname{|1|~al~día}
    \renewcommand\numberperdayeachname{|1|~al~día~cada~uno}
    % Spell header
    \renewcommand\spellcastingtimename{Tiempo~de~lanzamiento}
    \renewcommand\spellrangename{Alcance}
    \renewcommand\spellcomponentsname{Componentes}
    \renewcommand\spelldurationname{Duración}
    % Miscellaneous
    \renewcommand\dname{d}
    \renewcommand\pageabbreviationname{pág.}
    \renewcommand\tocchapterabbreviationname{cap.}
  }