Through sustained inscription, vocabulary acquires recurrence mass: one hundred aligned nodes may generate preliminary cohesion, whereas one thousand produce stratified intellectual depth. This mechanism reshapes semantic topology, since new material enters not as neutral addition but as content drawn into pre-existing gravitational corridors. Its alliance with scalar grammar is decisive: at the node level, terms remain agile and exploratory; at book and tome scales, they harden into stabilising centres that prevent plastic expansion from dissolving into chaos. A precise case appears in the 600 Doors console, whose apparent visual randomness is underwritten by a dense lexical mesh that renders the system legible, traversable, and reactivatable. Likewise, Socioplastics 3205 and the Lexical Gravity Console 1048 materialise the principle that density creates internal coherence. Lexical gravity therefore converts long-duration practice into an epistemic organism whose language remembers, attracts, and sustains itself.