$n$ edges, $k$ vertices, $\lambda$ chromatic number, $\mu$ clique number

$n$ vertices, $k$-regular, $\lambda$ common neighbors of adjacent vertices, $\mu$ common neighbors of non-adjacent vertices

$n$ vertices, $k$ edges, $\lambda$ triangles, $\mu$ diameter

$n$ components, $k$ cliques, $\lambda$ density, $\mu$ diameter