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.
formal and informal rhythm
what is formal and informal communication
There is no formal slang. Slang is informal language.
what is formal and informal shareholders agreement
Formal is polite, informal is rude and obnoxious.
explain the difference between formal and informal risk assessments