The functional domain of junction bears systematic relations to other functional domains. Relations among functional domains may be conceived as paradigmatic and syntagmatic, in the following sense:

1. The components of the concept of ‘nexion’ bear similarities to the concepts of other functional domains; this results in paradigmatic relations among them.
2. The linguistic expressions coding functions of junction code, at the same time, also functions of other domains which are interwoven in them; this results in syntagmatic relations among these domains.

Paradigmatic relations among junction and similar domains

1. Junction may be considered as grammaticalized rhetorical structure, which is one of the levels of the cohesion of a text.
2. Junction is essentially similar to participation. Both of these domains deal with syntagmatic relations among conceptual entities in a situation. They are complementary to each other as determined by the empathy hierarchy: junction is that section of participation dealing with participants at the lowest level of the hierarchy, i.e. participants propositional in nature.
   As a consequence, interpropositional relations are essentially similar to case relations (the essential ingredients of participation). And the syntactic treatment of propositional dependents is systematically assimilated to the treatment of participants higher up on the empathy hierarchy to the extent that desententialization and hypostatizing semantic processes act on the subordinate proposition.
3. The domain of design of situations comprises, i.a., the modification of situations by temporal and modal concepts. These may be expanded to entire propositions, which may manifest themselves as temporal and modal clauses.
4. Junction and information structure

Syntagmatic relations among junction and interacting domains

Since junction is the articulation of a proposition in terms of component propositions, anything that makes up a proposition potentially comes into play here. Some of the properties of the component propositions define essential subtypes of the configurations generated in junction:

1. The propositions combined by junction necessarily contain referents, which are taken care of in the functional domain of reference. In particular:
• Participant continuity and reference tracking are relevant. Their structural manifestations include, i.a., omission and resumptive pronouns. See the chapter on clause fusion.
• Referential control is relevant at least for complement and for purpose clauses.
2. Time reference and aspectuality: Each proposition has its own time reference and aspectuality. However, for most interpropositional relations, these are not freely combinable.
3. Negation: For intrinsic interpropositional relations, the position of the negator in the dependent or main clause varies ('negative climbing', see again the chapter on fusion. For various extrinsic relations, their combination with negation yields structural differences.
4. Junction and information structure

More on the syntagmatic interplay with these functional domains in the section on interdependence of propositions.

Subdivisions resulting from the interplay of functional features of the current domain with functional features of other domains are dealt with in the onomasiological perspective.