DaF; Deutsch als Zweitsprache; German as a second language; DaZ; German as a foreign language ; Lehrerausbildung; Teacher training; Lehrerfortbildung; In-service teacher training; Teacher education ; Academic language; Scientific language ; Parömiologie, kontrastive; Proverb scholarship, contrastive; Contrastive proverb scholarship ; Mehrsprachengrammatik; Multilingual grammar; Contrastive linguistics ; Neology (technical language) ; German ; Portuguese