Wae = why
Mwo = what
Omona = a somewhat meaningless word that serves as an exclamation and/or the question of 'really?'
Omo = equivalent of 'omg' or 'oh'
Ne = yes
Aniyo = no
Saranghae = I love you
Saranghamnida = formal version of saranghae
Yeobo = pet name for significant other that means 'honey'
Mianhe = I'm sorry
Kamsamnida = Thank you
Kamsamhamnida = Thank you very much
Cheonmaneyo = You're welcome
Annyeong = Hello/Goodbye
(I will add to this when I learn more or use something new~)