Cultural diffusion: Cultural diffusion is the process by which cultural traits, such as languages, beliefs, or customs, are transferred from one society to another through migration, trade, or communication.
Lingua franca: A lingua franca is a common language that is used between speakers whose native languages are different. It serves as a means of communication for people who don't share the same mother tongue.
Language revitalization: Language revitalization refers to efforts aimed at reviving endangered or dying languages by promoting their use among younger generations and preserving linguistic traditions.