"Bonjour" means "hello," "good morning," or "good day" in French. "Bon matin" is the literal translation for "good morning" in Quebec. "Salut" is a casual greeting suitable for friends but not strangers
"Guten Morgen" is used until noon in most regions. "Guten Tag" is used between noon and 6 p.m. "Guten Abend" is used after 6 p.m. "Wie geht es Ihnen?" is formal greeting for "How are you?"
"How are you doing?" asks for detailed, direct responses about feelings. "How are you?" is a polite greeting requiring only positive responses. British English uses "Are you OK?" instead of "How are you?"
Ohayou gozaimasu means "Good morning". Konnichiwa is used between 11am and 5pm. Konbanwa is used from 5pm onwards. Watashi wa desu is the polite way to introduce yourself
Olá is used in both Brazil and Portugal, slightly more formal. Oi is casual greeting mainly used in Brazil. Viva is common formal greeting in Portugal
你好 (nǐ hǎo) is the standard greeting but rarely used with friends. 您好 (nín hǎo) is respectful version used with teachers. 大家好 (dà jiā hǎo) is common greeting for groups