Bonsoir! can be considered formal or informal depending upon context. The greeting literally means "Good evening!" and tends to be more frequent in formal than in informal contexts. The pronunciation will be "bo-swar" in French.
"Salut" is an informal greeting in French, typically used among friends, family, or peers. It conveys a casual tone and is not suitable for formal situations. For formal contexts, it is better to use "Bonjour" or "Bonsoir."
it is an informal group
formal is the cinema and informal is a gay man
It's both formal and informal. It depends on how you say it. If you say "Adiós, señora." it's formal. If you say "Adiós, amigo." it's informal.
informal
formal and informal rhythm
what is formal and informal communication
formal
There is no formal slang. Slang is informal language.
Formal is polite, informal is rude and obnoxious.
what is formal and informal shareholders agreement