not even
if you want to spell the modern greek words correctly ,you have to know ancient greek.For example do you know why we say στην προστακτική αντίγραψε and not αντέγραψε ?
and even if you don't care about your language and if you use it with the right way (which i want judge if it is good or bad),you need to knoy them for geometry (what means προσκείμενες γωνίες;

) and geometry is used in algebra
apart from that all the languages have some words which are "stolen" from the greek.