Selaam is a direct Quranic name that means peace, safety, security, and a person who doesn’t harm others. It is used in many places in the Quran and is also the root for Allah’s name of as-Selaam. A person shouldn’t be named as-Selaam because the “as-” at the beginning makes it specific to Allah, it means “the One Peace”. But by removing the “as-“, the word becomes a general attribute and can be used as a name.