Language acquisition 59 Second language acquisition 50 Language and languages 25 Study and teaching 22 Mergers and acquisitions 20 Language Acquisition 16 Language 15 English language 14 Knowledge acquisition (Expert systems) 14 Mergers and acquisition 13 Acquisitions (Libraries) 12 Acquisitions 10 Children 10 Sociolinguistics 10 Psycholinguistics 8 Data mining 7 Study 7 Teaching 7 Libraries 6 Mergers 6 Second Language Acquisition 6 Acquisition 5 Language arts 5 Literacy 5 Automation 4 Digital libraries 4 Foreign speakers 4 Grammar, Comparative and general 4 Language arts (Early childhood) 4 Language disorders 4