Me too.
Sad to say, it seems the confusion is deliberate.
Repeater should mean repeater. But that is not the case.
A Wireless Router is an Access Point.
But not any Access Point is a Router
A Client is a beneficiary, the system serves him. The client does not benefit others. Often the Client is the end-user device.
However, you can flip router in being a client. Sometimes you do that to create a bridge whee you can not run an Ethernet cable between two points. In some jargon this kind of
Bridge they want to call a repeater.
Here is what most of us think a repeater should be. It would be something the overcomes the power limit of a wireless communication . It ought to be a single unit that does not require an Ethernet cable. It ought to be able to gather some packets and then repeat them. This would allow a distance client to get the repeated data.This kind of repeater zaps the bandwidth in half.
What I have written is dated. What is needed is clear, concise definitions fro the manufactures of what a device really does.
Thee is a new thing called 8
02.11ax and the implication is that to get the full benefit, most or all of your devices have to comply.
What is 802.11ax WiFi The easiest way to think of 802.11ax is to start with 802.11ac — which allows for up to four different spatial streams (MIMO) — and then to massively increase the spectral efficiency (and thus max throughput) of each stream. Like its predecessor, 802.11ax operates in the 5GHz band, where there’s a lot more space for wide (80MHz and 160MHz) channels.
If you have a lot of bandwidth, you can waster it.~~~~~~~~~~~~
Footnote: There is a thing called 'Ad-Hoc' and 'Mesh-Network' that changes the rules. This has been used in cases where real people need something simple that just works. In a classroom with mesh network, every kid can uses resources from any other kid. And it effectively extends the range of coverage. But low bandwidth.
Does that help any? A little bit?