Grammar, Comparative and general Syntax 17 Phonology 12 Language acquisition 9 Semantics 7 Linguistic change 5 Morphology 5 Language and languages 4 Space and time in language 4 Verb 4 Discourse analysis 3 Distinctive features (Linguistics) 3 English language 3 Generative grammar 3 Linguistics 3 Morphosyntax 3 Phonetics 3 Prepositions 3 Second language acquisition 3 Temporal constructions 3 Computational linguistics 2 Corpora (Linguistics) 2 Ellipsis 2 French language 2 Grammar, Comparative 2 Grammars 2 Grammaticalization 2 Historical linguistics 2 Languages 2 Linguistic universals 2