Kindle sits at the top of NOOK's neighbor set (0.61), but the second-strongest pull belongs to actor Kat Dennings at 0.59 — a cross-kind signal that defines the two-peak structure here.

The first peak is the expected one: Kindle at 0.61 and Barnes & Noble at 0.57 form a tight reading-and-retail cluster, the only two neighbors that share obvious thematic proximity to an e-reader platform. The second peak is built almost entirely from actors and entertainment properties. Kat Dennings (0.59), Jeri Ryan (0.55), and Mariska Hargitay (0.55) are the next three neighbors after Barnes & Noble — all actors. Mayim Bialik (0.54) follows. Rounding out the top 10 are Star Trek (0.56, Movie Franchises), Elton John (0.55, Musicians and Bands), Sweetwater (0.53, Music brand), and Petfinder (0.53). Of the top 10, six are Celebrities and Influencers — four of them actors — and only one neighbor (Kindle) shares NOOK's own subcategory of Entertainment Platforms. The Star Trek franchise threading through both peaks — appearing at 0.56 in similarity — hints at a specific cultural cohort bridging the two clusters rather than two entirely separate audiences.

The shape reveals an audience that overlaps with a recognizable entertainment-platform peer on one side and a distinct cohort of TV-adjacent celebrity followers on the other, with no clean single-tribe identity.