Sociolects (child language, language of adolescents, immigrants, specialised language etc) (language endangerment, special registers (mother-in-law)), Functional linguistics (Linguistic Typology, Semiotic grammar), Language history (comparative linguistics, etymology) (comparative Bunuban, comparative Nyulnyulan, comparative Worrorran, grammaticalisation), Morphology (ergative case-marking, optional case-marking), Psycholinguistics (classification, language and theory of mind, symbolic cognition), Semantics (cognitive semantics, formal semantics etc) (mood and modality, semantics of grammar), Syntax (complementation constructions, compound verb constructions, mood and subordination)
