Chart = Graph = Visual representation of data where the data are represented by symbols, such as bars (bar chart), slices (pie chart), or dots connected by lines (line graph).
Charts and graphs typically have the following features:
Pie Chart
Show proportion of total
1 or dimension
Could also be displayed as a "doughnut"
Data source: UFV Factbook, 2015-16
Column or Bar Chart
Compare categories of data
1 or more dimensions
Referred to as a bar chart when columns are displayed horizontally
Data source: UFV Factbook, 2015-16
Bubble Chart
Represent relative sizes
3 dimensions
Relative of the scatterplot
Data source: 20th Century Death (from the "Information is Beautiful" blog)