Remark is a versatile word in English with multiple meanings:
1. As a verb: to say something casually or make a comment ("She remarked that the weather was nice")
2. As a noun: a brief statement or observation ("His witty remark made everyone laugh")
3. In computing: a comment in source code (also called "comment" in programming)
4. In formal contexts: to notice or observe something ("I remarked an unusual pattern")