This is the 8908th most frequent Japanese word.
歴然
Evident; clear; obvious.
Here, "歴然" is used to describe the unmistakable and clear difference between two parties.
彼と私の実力差は歴然としている。
The difference in ability between him and me is clear and distinct.
"歴然" is utilized to convey that the results are becoming clear and indisputable.
試合の終盤で歴然とした結果が見えてきた。
Near the end of the match, an evident outcome started to appear.
The term "歴然" emphasizes the clarity and undeniable nature of the evidence provided.