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Subject
- Vocabulary150
- Study and teaching53
- English language51
- Language and languages37
- Second language acquisition23
- Language acquisition11
- Lexicology10
- Foreign speakers9
- Usage8
- French language6
- Semantics6
- Foreign elements5
- Language5
- Research5
- Word formation5
- Ability testing4
- Etymology4
- Languages in contact4
- Psychological aspects4
- Spanish language4