Formal:
* Courtesy: This emphasizes the social obligation aspect.
* Social graces: This highlights the polite, conventional nature of the exchange.
* Pleasantries: This term captures the general sense of being pleasant and polite.
Informal:
* Chit-chat: This describes light, casual conversation.
* Small talk: This is a common and straightforward term.
* Niceties: This implies a focus on being polite and agreeable.
* Politeness: This emphasizes the respectful nature of the interaction.
Other options:
* Formalities: This emphasizes the formal nature of the exchange.
* Greeting rituals: This highlights the routine aspect of such interactions.
The best word to use depends on the specific context and the desired level of formality.