Basic Greetings

안녕하세요 [an-nyeong-ha-se-yo]
Hello

• 안녕 [an-nyeong] means “peace”
• 하세요 [ha-se-yo] means “do you do?”
• Literally means “peace, do you do?”

안녕 [an-nyeong] is a casual way to say “hi”

감사합니다 [gam-sa-ham-ni-da]
Thank you

• 감사 [gam-sa] means “gratitude”
• 합니다 [ham-ni-da] means “I do”
• Literally means “gratitude, I do”

고마워 [go-ma-wo] is a casual way to say “thank you”

• A: 어? 안녕하세요
  Oh? Hello
• B: 안녕하세요 [an-nyeong-ha-se-yo]
  Hello.
• A: 여기요
  Here you go.
• B: 감사합니다 [gam-sa-ham-ni-da]
  Thank you.