Primacy is accorded to synchronic linguistics, and diachronic linguistics is defined as the study of successive synchronic stages.
From the en.wikipedia.org
Ferdinand de Saussure's distinction between synchronic and diachronic linguistics is fundamental to the present day organization of the discipline.
From the en.wikipedia.org
Light verbs are interesting to linguists from a variety of perspectives, including those of diachronic linguistics, compositionality, and computational linguistics.