"How to say 'man' in English?"
In English, "man" is the singular form of the word for male human beings. It can be used as both a noun and an adjective. For example, "The man is walking his dog" uses "man" as a noun, while "This is a manly drink" uses "manly" as an adjective to describe the drink. If you are referring to multiple males, you might use the plural form "men", as in "These men are my coworkers".