On C^s_n(kappa) and the Juhasz-Kunen question

We generalize the combinatorial principles $C_n(\kappa), C^s_n(\kappa)$ and $Princ(\kappa)$ introduced by various authors, and prove some of their properties and connections between them. We also answer a question asked by Juhasz-Kunen about the relation between these principles, by showing that $C_n(\kappa)$ does not imply $C_{n+1}(\kappa)$, for any $n>2$. We also show the consistency of $C(\kappa)+\neg C^s(\kappa).$