The word-based description "🌱✋🐛" relates to the description "setaceous" by representing the progression from a seedling (🌱) being touched by a hand (✋) to eventually transforming into a caterpillar (🐛). The term "setaceous" is an adjective that describes something bristle-like or having long, slender, and stiff hairs, which could be associated with the tactile experience of touching the caterpillar's setae or bristles.