Basics:

Hello – Bok
Good day – Dobar dan
Good night – Dobra vecer
Goodbye. – Ciao
Yes/No – Da/Ne
Please – Molim
Thank you – Hvala
You’re welcome – Nema na cemu/Molim

Numbers:

1 – jedan
2 – dva
3 – tri
4 – cetiri
5 – pet
6 – sest
7 – sedam
8 – osam

Question words:

How? – Kako?
What? – Sto?
When? – Kada?
Where? – Gdje?
Who? – Tko?
Why? – Zasto?