1. The ____________ in working conditions between our Denver department and our department in Chicago is very noticeable, and employees are now demanding equality in this area.
contrast
2. The two engines ___________ considerably from each other: one runs on gasoline, and the other is a gasoline-electric hybrid.
differ
3. It is often difficult to ____________ between students who are absent because they are genuinely sick, and those who are just enjoying a day in bed.
differentiate