Central semantics of value conjunction

The conjunction constitutes an invariant PoS which relates syntactically two (or more) words of a sentence or two (or more) sentences.
Conjunctions belong to the particular class of textual connectives.

Formal criteria:

Conjunctions can be simple and compound and consituted by multiword expressions, which can be encoded as an unique entry in the lexicon:

D e s c r i p t i o n E x a m p l e s

simple e/conj   ma/conj   quindi/conj   anche/conj  

compound neanche/conj   nondimeno/conj   oppure/conj   anche/conj  

more than 1 w. dal momento che/conj   per il fatto che/conj   dato che/conj