Agreed, I wasn’t suggesting Finnish and Estonian were so similar that they possessed significant mutual intelligibility, merely that they were related and featured cognates.
We can take, for example ‘beer.’ Apart from the Spanish Cervaza and Portuguese Cerveja, the word for beer is fairly consistent amongst Western European languages. This is not to suggest mutual intelligibility between German and English and Italian, only that they all originate from a common branch of Indo-European.
I‘m not a linguist so happy to be corrected, but my understanding is Basque and Albanian are unique amongst Western European languages inasmuch as neither are understood to relate to any other European language.