Say someone writes a sentence with an error with the case:
- the quick brown fox jumps over the lazy dog.
Would you say that:
- This sentence contains a case error.
- This sentence contains a casing error.
Of course, ideally you would say something more specific, such as:
- This sentence's first letter needs to be uppercase.
I'm curious to know the proper use of case while referring to letters (uppercase, lowercase). dictionary.com or merriam-webster.com did not provide any help, so maybe I'm fundamentally wrong about its use?