Punctuation (noun)

1. The use of signs or symbols in writing or printing, such as commas, periods, and quotation marks, to separate sentences, clauses, and phrases, and to indicate certain grammatical relationships.
2. The marks or symbols used for punctuation.

Origin:

From latin punctuātiō, from punctuāre ("to point, to mark with a do.t")

Examples:

1. Correct punctuation is essential for clear and effective communication.
2. The lack of punctuation in the note made it difficult to understand the meaning.
3. You need to use proper punctuation when writing a formal letter.
4. The teacher corrected the punctuation errors in the student's essay.
5. The use of semicolons in punctuation can be tricky for some people.