The decisive distinction is between lexical status and formal technique. “Weird-looking” is not a provenance category.

Axis one: what kind of lexical object is it?

ClassMeaning hereRoute
Probable internal formationA word-level form strongly supported as locally manufactured; no global priority claim.Neologisms
Nonce formation candidateA one-off word-like object that may be locally made but has not survived strict provenance review.Unsettled words
Productive error / corruptionA familiar form altered by mishearing, respelling, segmentation, memory or useful wrongness.Lexical mutations
Rare / transplanted wordAn existing archaic, technical, foreign or subcultural term moved into a local field.Rare & transplanted
Semantic refunctioningAn existing word given a durable corpus-specific job.Refunctioning
Generated candidateA form produced by a quoted generative system inside a source.Machine-coined words

Axis two: what formal technique is operating?

TechniqueWhy it is separate
Distinctive phraseologyInvention at phrase/sentence scale does not become neologia merely because the phrase is new.
Sentence-compound / hyphen engineSyntax is temporarily compressed into morphology; structurally lexical-looking, but still phrase-level.
Sound-writingOrthography follows mouth, stress, stutter or percussion rather than dictionary spelling.
Proper-name mutationNames drift under sound and role pressure; the interesting event is mutation, not necessarily lexical invention.
Counterfeit terminologyA form borrows the authority-sound of a diagnosis, discipline, genre, office or technical apparatus.

Result: the same item can have a formal-technique tag without being promoted into the neologism register. This is how the wiki preserves maximum linguistic detail without inflating lexical claims.