【dropout】 —

1. a person who “drops out” from a course of study or from society:

• Many dropouts leave school long before their senior year. The ninth grade year is a particularly difficult year for students.

2. (attrib.) is used of people who leave a course of study, membership of a society, etc.:

• Is there a correlation between the 【dropout】 rate and the amount of money a school district spends?

【fallout】 —

1. radioactive dust or particles (created by a nuclear explosion):

• Measurements were made on the concentration of 【fallout】 in the atmosphere and in rain water.

2. lasting negative consequences of an event or situation:

• Our ability to have as much sugar as we crave has had serious 【fallout】 on the health of Americans.

3. = 【dropout】 2:

• Main reasons for this high 【fallout】 rate: financial difficulties, lack of interest, parental resistance to “useless” further education.