Also known as aa lava, ʻaʻā, aʻa, a-aa, ‘a‘ā
basaltic lava characterized by a rough or rubbly surface composed of broken lava blocks called clinker
In the Vinony graph
Within Vinony's link graph, aa connects to lava.
It is catalogued under the topic Printworthy redirects.
Vinony links it to 15 Wikipedia language editions.