Zumar is a direct Quranic name for boys and girls that means groups, throngs of people, companies, crowds. It refers to the groups of people that will be lead to the gates of Paradise when the Day of Judgment ends.
Zuraib is an indirect Quranic name for boys that means fierce attacker. It is the name of one of the Sahaba (companions of the Prophet (PBUH) whose full name is Zuraib ibn Naqeer ibn Sumair.Zuraib is derived from the DHAD-R-B root (to strike) which is used in many places in the Quran.
Virtuous, Pious, God-Fearing and Devoted to God BLANKENTER Zyauddeen is another spelling of the Arabic boy name Diaudin which means brilliance of the faith. They are the same name and have the same meaning and Arabic pronunciation. In English you can choose either variant, both are acceptable.