This is the 363rd most frequent Japanese word.
男性
"男性" means "male" or "man" in English.
Here, '男性' is used to refer to 'a man' in a general descriptive context.
その男性は親切ですね。
That man is kind.
In this example, '男性' designates a specific demographic role within a narrative as 'a male protagonist'.
この演劇の主人公は若い男性です。
The protagonist of this play is a young man.
Here, '男性' refers to men as a group in a general or statistical observation.