Core semantics of value conjunction

Conjunctions: Morphosyntactic criterion

A conjunction is an invariable morphological unit which relates two clauses. Coordinate conjunctions can also relate two syntactic constituents which have the same syntactic function.

Test:

Given P, tex2html_wrap_inline52213 clauses: If
P + X + tex2html_wrap_inline52213
or
P + , + X + tex2html_wrap_inline52213
or
P + . + X + tex2html_wrap_inline52213
succeeds, then X is a conjunction.

Examples:

Test:

Given P, tex2html_wrap_inline52213 clauses and P + X + tex2html_wrap_inline52213: If X cannot be moved inside tex2html_wrap_inline52213, then X is a conjunction.

Examples:

but:

Examples:

Test:

Given X an invariable morphological unit: If X cannot be preceded by a coordinate conjunction, then X is a conjunction (and not an adverb).

Examples:

but:

Examples: