Final answer:
Race refers to physical differences considered significant by a society, while ethnicity describes shared culture and origin. Minority groups are defined by their subordinate status due to lack of power. An example of a minority group is the elderly, who face prejudice and discrimination.
Step-by-step explanation:
The terms race and ethnicity have distinct meanings in sociology. Race refers to superficial physical differences that a society considers significant, while ethnicity describes shared culture and national origin. Minority groups are defined by their lack of power or subordinate status in society. For example, the elderly can be considered a minority group due to prejudice and discrimination against them.