Please, thank you, and the basics of being polite.

• MurakozeThank you (standard; said to one or many, or politely to one)
• UrakozeThank you (to one person, more familiar)
• Murakoze cyaneThank you very much
• Nta kibazoNo problem / You're welcome (lit. 'no problem')
• MwihanganeSorry / Excuse me / Please bear with me (to a group or politely to one; also for sympathy)
• IhanganeSorry / Be patient (to one person)
• NyabunekaPlease
• YegoYes
• OyaNo
• Murakaza nezaWelcome (greeting a guest/arrival; lit. 'you come well')
• TubonaneSee you / Until we meet again (lit. 'let us see each other')
• MurabehoGoodbye (parting; lit. 'may you live/stay well')