What is Zekre according to Islam?

I already know the answer to this question but people have different views so I purely just want to see out of my own curiosity in how many people know about this Zekre and what it's meant for. In my opinion this Zekre is the most underrated method of worship in Islam. Zekre is actually more important than Namaz, but these days some people that I asked think Zekre is a type of prayer or duah. I don't think people evan know what the reason for a woman to wear hijab is, I think that they think it's because of respect or for women not to show off or be presented as whores, the main reason from what I know of is purely because of the aura on the body, and they have to dress to a healthy and standerlized level, not like the invalid interpretation of the Saudi Arabs covering the entire face which is completely wrong. It evan says in the Quran that after the age of approximately 45 or 50 if I'm not mistaken women can ease on their hijab again if I'm not mistaken. It's crazy How people misinterpret the Quran and the true teachings of Islam.