Question about edimax EW-7438RPn

What does one have to do with the other? The first is a WLAN repeater and access point. The other is a powerline adapter. Of course you can use the powerline adapter to lead your network to an upper floor, for example, and connect the adapter there to the WLAN access point via an Ethernet cable. However, this is very inconvenient, as there are powerline adapters for exactly this purpose that also contain a WLAN access point.