The phrase "difference between people" refers to the ways in which individuals vary from one another. This can include differences in personality, beliefs, values, cultures, abilities, preferences, and experiences. Full definition
There's a big difference between people who say they want it and people who do it. (inc.com)
The failure to account for differences between people with a view to ensuring that everyone is able to enjoy their rights may also be discriminatory. (humanrights.gov.au)
There was also some huge differences between people in the same diet. (idmprogram.com)