Sometimes the word man or mankind is used when referring to all human beings (both male and female):
However, some people consider this sexist, so it is better to use humans or humankind:
Humans and human beings use the plural form of the verb, but humankind uses the singular form of the verb:
We often use humans or humankind when making broad statements about humanity in general. Human beings is often used when contrasting humans with animals, or when encouraging people to treat each other “like human beings” (meaning with respect and fairness).