Why are coastal Karnataka towns named " proper " ?

Namaskara Kudladaklu As someone from Karnataka who has not visited coastal towns ( I really want to) why are many towns named " proper " ? Like bajpe proper Belve proper Perdoor proper Muduperar proper Paduperar proper Bajpe proper Kedoor proper Cherkady proper Itlagundi proper Heroor proper Devaragundi proper Kavradi proper Heskethur proper Senapura proper Etc Is it like a tulu word for "nagara" or something ?