Hey there!
They are common because ..............
- The words "boldface" and "italics" are similar to each other because they are used for the prominence"(emphasis)(Some people use it for "typography") Other than that they are practically styles that are designed for contrasting with normal font (mainly the Roman font/ document) but they are definitely difficult to read sometimes.
They look like this...............
- Italics looks like this
- Boldface looks like this
Good luck on your assignment and enjoy your day!
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