Degree of a local field extension (reviewed)

Let $L/K$ be an extension of $p$-adic fields. The degree of $L/K$ is the dimension of $L$ as a vector space over $K$.

The base degree $n_0$ of $L/K$ is the degree of $K/\Q_p$. The absolute degree $n_{\mathrm{abs}}$ of $L/K$ is the degree of $L/\Q_p$.