when compared (with)

contrasting; corresponding

the artificial process of removing waste products from the blood, e.g. when the kidneys are not working

being apart; break-up

the division (e.g. of a country) into parts ; something that separates or divides, e.g. a thin wall between rooms

divider, division

(a period of) separation (of imported animals) from others until it is known that there is no danger of spreading disease

isolation

(a policy, way of behaving, based on) the belief that one's own race is superior to others

prejudice against an ethnic group

(an act of) separating or being separated or separate; an instance, period, of not being together

being apart; break-up