The same is true for tea (Ceai, Чай, Τσάι, Çay), but it is not true for older local foods - for exmaple cheese is Brânză in Romanian, Сирене in Bulgarian, Τυρί in Greek and Peynir in Turkish; apple is măr, Ябълка, μήλο, elma.

Interestingly, while they don't generally share much vocabulary, the Balkan languages all share certain grammatical traits despite their very different origins origins (some examples are the use of articles even in slavic languages, a preference for the subjunctive instead of the infinitive, the lack of a proper future form for verbs, using a compound with "want" instead).

I think you mean cases? These are mostly simple suffixes you attach on the end of the noun/adjective: for example talo (house), talossa (in the house, i.e. house-in). There's some rules around vowel harmony (same as with other Uralic languages like Hungarian, as well as Turkish) and consonant mutation (so a t becomes a d in a closed syllable) but these follow regular rules with a few exceptions for some foreign loanwords.

Vocabulary is quite small with lots of compound words - however other than some aforementioned loanwords (mostly from Swedish and more recently English) the core vocabulary is pretty alien to an Indo-European speaker. Spelling is completely phonetic (everything written as it's spelt) although as with most languages there are strong regional dialects.

Finnish has a lot of up-front rules to learn, but for the most part it's pretty regular with few exceptions (there's also the lack of grammatical gender, another feature of Uralic languages). Russian on the other hand is exceptions all the way down.

And interestingly to extend this chain of connections I just read your comment and through my basic knowledge of the Greek alphabet gained through maths, and a rough proficiency in pronouncing Cyrillic I could spot that the word is very close to the Turkish “portakal” (I know a few words from spending some time there over the years).