Something you say to greet someone politely when you meet them in the afternoon

Something you say to greet someone politely when you meet them in the evening

 Something you say to greet someone politely when you meet them in the morning

Said when people leave each other in the evening or before going to bed or to sleep

Used when meeting or greeting someone

Used as an informal greeting, usually to people who you know

Used for saying goodbye to someone you are going to meet again soon