A few examples of how ben yehudah sr”y used modern Hebrew to secularize judaism – bitachon means trusting hashem, yet in israel it means military security. Kibutz galiyos always meant the end of galus, now it is used for immigration; keren kayemes, the term in the mishnah for the rewards of olam haba, became used for the Jewish national fund. Chashmal, a type of angel, was used to become the word for electricity by yehudah leib gordon sr”y…it would be like calling medication “refael”, it’s like saying that we used to believe in angels, now we have science. Agada in torah means a true story, in hebrew nowadays it means a legend…
I can give tons more examples if necessary