Wikipedia lists 4 kinds, but only two of them are described by single words.
But only 2.1 and 2.2 are real. The other two were made up by Vulcanologists in preparation for the arrival of two new types of lava. 🤣 🤣
I would never doubt an online source.
EDIT: There are two principal types of lava flows in Hawaii. Pahoehoe is the type characterized by smooth, ropy, or billowy surfaces (Plate 5); whereas aa has a very rough, spiny or rubbly surface, but a massive interior (Plate 4).