Do I have to pay for both internet and WiFi?

So I am moving into an apartment and was wondering what I was gonna have to pay. So at my house now my family pays for internet through spectrum and we also bought a WiFi router with netgear. We only have smart TVs and laptops so do we need both the internet and the WiFi router? Or can we use the WiFi router and... show more So I am moving into an apartment and was wondering what I was gonna have to pay. So at my house now my family pays for internet through spectrum and we also bought a WiFi router with netgear. We only have smart TVs and laptops so do we need both the internet and the WiFi router? Or can we use the WiFi router and get rid of the internet we pay for?
And please explain why or why not so we have a better understanding lol.

When I move out I need to know if I need to get monthly internet or if I can just buy WiFi router.
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