Depository institution: https://www.walletofsatoshi.com/

Exchange one money for another: https://www.exodus.com/

"Exodus Bitcoin & Crypto Wallet The only wallet you'll ever need. 50+ networks supported. Swap between 1000s of assets."

Now I grant you, that last one you'll only find in shitcoin wallets, but the point is, my meme is exactly accurate. Is it a bastardization of English to use an oxymoron to describe something (custodial wallet)? Yes, but that's the reality we live in. Companies being deceptive because no one will sue them for deceptive practices.