Internet Glossary: Common Terms Explained

Provider pricing pages are full of terms that are rarely explained in plain language. This glossary covers the ones that actually affect what you pay and what you experience, without the technical depth you don't need as a consumer.

Mbps / Gbps

Megabits and gigabits per second — the units internet speed is measured in. 1 Gbps equals 1,000 Mbps. This measures download and upload speed, not overall internet quality.

Download speed

How fast data transfers from the internet to your device — what determines how quickly a page loads or a video buffers.

Upload speed

How fast data transfers from your device to the internet — what matters most for video calls, livestreaming, and uploading large files.

Symmetrical speed

A connection where upload and download speeds are equal or very close, common with fiber internet and less common with cable.

Latency (ping)

The delay, measured in milliseconds, between sending a request and getting a response. Lower latency matters most for gaming and video calls.

Bandwidth

The maximum amount of data a connection can handle at once — often used interchangeably with speed, though technically it describes capacity rather than actual throughput.

Data cap

A monthly limit on how much data you can use before facing a fee or reduced speed. Many modern plans are advertised as "unlimited," but it's worth confirming directly.

Bundling

Combining internet with TV, phone, or home security service for a discounted combined price — often with separate terms and a different promotional period for each service.

Promotional rate

A temporary discounted price, typically lasting 12 months, after which the plan reverts to a standard (usually higher) rate.

Early termination fee (ETF)

A charge for canceling service before a contract term ends, common with plans that offer lower promotional pricing in exchange for a commitment period.

Modem

The device that connects your home to your provider's network. Some providers require a rented modem; others allow you to buy your own compatible one.

Router

The device that creates your home Wi-Fi network and distributes the internet connection to your devices. Sometimes combined with the modem in a single unit.

Mesh Wi-Fi

A system of multiple connected devices that spread Wi-Fi coverage evenly through a home, often used to fix dead zones a single router can't reach.

Fixed wireless

An internet connection delivered over radio signals from a nearby tower rather than a physical cable — common in rural areas where cable or fiber isn't available.

Satellite internet

An internet connection delivered via satellite, often the only option in remote areas, generally with higher latency than cable, fiber, or fixed wireless.