In many examples of modern grammar, the five key components of clause structure are defined as subjects, objects, verbs, complements, and adjuncts. My question is simple: do subjuncts, disjuncts (sentence adverbials), and conjuncts (conjunctive adverbials) fall under the categorisation of adjunct?
I have been trying to develop my understanding of these so that I can comfortably identify them when I see them (subjuncts are the most difficult for me); however, I want to know whether I am wasting my time. I am not trying to become a linguist—I just want to improve the quality of my writing.
For example, should I simply call a disjunct a supplementary adjunct when I see one? I know that it's grammatical, and I can identify its function (conveying the viewpoint of the writer). It would seem that I may have reached the point of diminishing returns.
In the answers to this question, I am looking for a functional breakdown of these categories, not the words themselves. I want to identify whether 'adjunct' is a catch-all term.