They are both Finno-Ugric languages. And for two countries only 50-80km apart, there's nothing strange about it.
Estonians and Finns can talk to each other in their languages and still understand at least half of the text, since words sound very similar and pronounciation is same.
Difference lies in fact that finnish have invented more words where Estonian simply took over some latin form.
But even for weird finnish words, they are super easy to guess if you're Estoninan...
Say, word "film". Estonian uses "film" for this like most of the world. Finnish say elokuva. But even this is quickly recognizable, since elo is very similar to Estonian elu which means "life". And kuva sounds like short for verb kuvama - to show or present something. So you get life + present = "presentation of life". Which - in context - can be easily recognized as film.
Estonians and Finns can talk to each other in their languages and still understand at least half of the text, since words sound very similar and pronounciation is same.
Difference lies in fact that finnish have invented more words where Estonian simply took over some latin form.
But even for weird finnish words, they are super easy to guess if you're Estoninan...
Say, word "film". Estonian uses "film" for this like most of the world. Finnish say elokuva. But even this is quickly recognizable, since elo is very similar to Estonian elu which means "life". And kuva sounds like short for verb kuvama - to show or present something. So you get life + present = "presentation of life". Which - in context - can be easily recognized as film.