• Cliticization shows distinct syntactic hosting and phonological attachment for clitics, revealing independent parameters for clitic position and movement across Romance and related languages [13], [4], [11], [8].

• Variation, diachrony, and regional change in Romance surface in NWAVE-style diachronies and dialect divergence, tracing from Late Latin to early Romance and through French and Spanish varieties [3], [15], [20], [7], [19].

• Code-switching typology and diglossia illuminate language contact in Romance contexts, with practical typologies and sociolinguistic constraints across bilingual settings [2], [5], [16].

• Cognitive and psycholinguistic perspectives reveal mental representations of grammatical relations and interlanguage phonology, linking syntax theory to processing and acquisition [6], [16], [18].

• Phonology-centered theories and their consequences, including lexical phonology's impact on linguistic theory and cliticization's phonological hosting, illustrate interface across morphology and phonology [1], [16], [8].