Meaning by "ink" I am thinking: drawings and tattoos!
Drawings: illustrations, doodle art, caricatures, realism, concept art, childrens illustrations, random ppl sketching, anatomy, poses, did i say ppl sketching? Etc.
Tattoos: realism, line, new school, watercolor, black and gray, illustrative, biomechanics, lettering, trash polka, blackwork, dotwork, geometric.