What is a value exchange-traded fund?

Excuse me, I'm curious to know more about value exchange-traded funds. Could you please explain in simple terms what a value ETF is? As a layman in the field of finance, I've heard the term but am not entirely sure of its workings. I understand that ETFs in general are baskets of securities that track a certain index or benchmark, but how does a value ETF specifically differ? What types of securities does it typically invest in? And why would investors choose a value ETF over other types of investments? Thank you for your insight.