how similar are Serbian and Polish? They are both Slavic languages so how similar are they? When i listen to them it sounds pretty similar
Though no expert, I'm Polish–Serbian by descent.
I'm sure you're aware how different the alphabets are, but the phonetics are very similar, like you said.
The only difference in pronunciation I can think of is ch in Polish, for which I am unsure of a Serbian equivalent.
I also don't think that there are feminine or plural surname conventions in Serbian like there are in Polish.
I'm unsure whether sounds change depending on which letter precedes or succeeds them in Serbian as in Polish (the reversal of voicing or devoicing).
But, a lot of the vocabulary only slightly differs. For example:
баба and Babcia (grandma)
жена and żona (wife)
пиво and piwo (beer)