Vocabulary consisting only from characters you are able to read
歴然
れきぜん
evident, plain, distinct, clearmix
一方で
いっぽうで
on the other handmix
改める
あらためる
(1)to change, to alter, to revise, to replace, (2)to reform, to correct, to mend, to improve, (3)to examine, to check, to inspect, (4)to do properly, to do formally ichidan, verb, vtrans