Satan is a counterfeiter and a pretender.
Russians use the word "Easter," too.
"Lent" just means "spring" in some version of Anglo-Saxon. Names of things are not particularly important over the centuries, and calendar days wander with changes in measurements of the stars. It's the teaching and the habits of the people that give holy days their life.
After the great schism in 1054 although the churches were split among several doctrinal views, they both still believed Easter should be celebrated on the first Sunday after the first full moon to follow the vernal equinox. The Catholic Church, however, no longer found that it had to fall after Passover. Added to this was the Catholic Church's switch over from the Julian calendar to the Gregorian calendar, which was presented in 1582. The Orthodox Church still held to the original Nicean Council's formula for Easter as well as following the original calendar system of the Julian calendar. By using two different calendar systems, the vernal equinox now fell on March 21 under the Gregorian calendar and April 3 on the Julian calendar. The two churches now celebrated the same Easter holiday on two different days
Easter is NOT pagan and don't fall for the fake "Eostre" story -- that is so incredibly bogus for three reasons: