Disclaimer time! I don't speak these languages... so Google Translate is my source. So all credit/blame goes to them. :)
Here is a comparison of "church" in Rusyn to "church" in a variety of other languages from nearby countries. Transliteration of words in Cyrillic are in parentheses after each word.
Rusyn
цирков (cyrkov) Bulgarian
църква (tsŭrkva) Croatian
crkva Czech
kostel Estonian
kirik Finnish
kirkko Galician
igrexa Hungarian
templom Latvian
baznīca Lithuanian
bažnyčia Norwegian
kirke Polish
kościół Romanian
biserică Russian
церковь (tserkov') Serbian
црква (crkva) Slovak
kostol Slovenian
cerkev Swedish
kyrka Ukrainian
церква (tserkva)
I was very surprised to see how different the Czech and Slovak words are from Rusyn, especially when considering their proximity to the Rusyn area [Rusyns live in Slovakia and Ukraine] and the fact that a lot of Rusyn words are very similar to their counterparts in Czech/Slovak. No surprise here: the Rusyn word is very similar to Russian and Ukrainian.
I ended up including the Baltic States because of how similar some of their words are to the Romanian word for church. Unexpected!
As always, Hungary is an outlier. :-P
I'm sure you're wondering why I included Galician, as it clearly has nothing to do with anything I'm talking about. I included it simply to point out that the Galician language in Google Translate refers to Galicia in Spain, not Galicia the historic area in Eastern Europe.
To help visualize these variations, I threw together a map:

Fascinating, no?!