Understanding Zerobounce Validity and Catch-All Emails

I am using Zerobounce to validate my email addresses for sending, which is not a tool I have used previously. I started sending and saw a high bounce rate. I am now noticing that Zerbounce, in an email waterfall, will put a "catch all" email through as valid Is this accurate? If zerbounce comes back as "valid" and sub status "catch all" -- then this is a catch all email address right? What should I look for with zero bounce that makes an email address strictly valid without catch all status?