1. age discrimination
I think I didn't get the job because of age discrimination.
The age discrimination concerns mainly aged people.
2. ageism
Veteran presenters have attacked what they see as ageism by TV bosses.
The new law aims to stop ageism in the workplace.
ageism discrimination against people because of their age
3. gender inequality
What is gender inequality: gender inequality is the unequal treatment or perceptions of individuals based on their gender, It arises from differences in socially constructed gender roles.
We already have a great deal of gender inequality