"Traditional grammar" has a particular way of distinguishing "parts of speech" ('man' is a noun) and "the component parts of the sentence" ('The man' is the subject of the sentence 'The man went away'). 'Traditional grammar' is in itself a research field.
Hans Kronning The main concerns of Developed Traditional Grammar revolve around the identification and classification of parts of speech, sentence structure, and syntactic roles (e.g., subject, predicate). It aims to provide a systematic approach to language analysis based on established linguistic rules, focusing on prescriptive norms for correctness and clarity in communication.