Bar graph and Bar chart

Bar graph noun - A chart with bars whose lengths are proportional to quantities.

Bar chart is a synonym for bar graph. In some cases you can use "Bar chart" instead a noun phrase "Bar graph".

Bar chart noun - A chart with bars whose lengths are proportional to quantities.

Bar graph is a synonym for bar chart in graph with bars for values topic. You can use "Bar graph" instead a noun phrase "Bar chart".