Final answer:
A population pyramid is used to determine the population distribution of a country, while pie charts are used to illustrate the share of the total population in different categories.
Step-by-step explanation:
A population pyramid is used to determine the population distribution of a country. It is essentially two bar graphs that depict male and female age cohorts either in absolute size or as a percentage of the total population. Different pyramid types, such as rapid growth, slow growth, and negative growth, can indicate the population characteristics and trends of a society. Pie charts, on the other hand, are often used to illustrate the share of the total population that falls into different categories, such as age groups, income levels, and ethnicities.