Mesh WiFi vs WiFi Repeater/Extender vs Powerline Adapter
Amazon.com: TP-Link Powerline WiFi Extender - Add-on Single Adapter, Ethernet over Powerline, Plug & Play, Compatible with all TP-Link powerline adapters with different speed, AV600 with N300 WiFi(TL-WPA4220) : Everything Else
Wi-Fi extenders vs powerline adapters: Everything you need to know | Tom's Guide