Discriminate (di SKRIM uh NATE) v: to notice or point out the difference between two or more things; to discern; to differentiate
A Person with a refined aesthetic sense is able to discriminate subtle differences where a less conversant person is discriminating. This kind of discrimination is a good thing. To discriminate unfairly, though, is to dwell on differences that shouldn't make a difference.
It is unfair-and illegal-to discriminate between black People and white people in selling a house. Such a Practice is not discriminating (which is good) but discriminatory (which is wrong).
Disinterested (dis IN tri stid) adj: not taking sides; unbiased
Disinterested should not be used to mean uninterested. If you don't care about knowing something, you are uninterested, not disinterested.
A referee should be disinterested. He or she should not be rooting for one of the competing teams.
A disinterested observer is one who has no personal stake in or attachment to what is being observed.
Agatha claimed that the accident had been Lester's fault. But several disinterested witnesses said that Agatha had actually bashed into his car after jumping the median and driving in the wrong lane for several miles.