Both Bar Charts and Histograms use the height of bars (rectangles of the same width) to visually depict data. So, they look similar.
1. Separated or contiguous
2. Types of data
3. How Used
I just uploaded a new video: Alpha and Beta Errors.
And previously, I had uploaded a video on Statistical Errors -- Types, Uses, and Interrelationships.
See the Videos page on this site for a list of my videos previously uploaded.
Andrew A. (Andy) Jawlik is the author of the book, Statistics from A to Z -- Confusing Concepts Clarified, published by Wiley.