Is phantom a private wallet?

Excuse me, could you clarify something for me? I've come across the term "phantom" in the context of cryptocurrency wallets, and I'm wondering if it refers to a private wallet? I'm a bit confused about the different types of wallets available, and I'm trying to determine if phantom falls into the category of wallets that allow users to maintain full control over their private keys and funds. If it's not a private wallet, could you please explain what type of wallet it is and how it differs from a private wallet? Thank you in advance for your help.