Translation guide
A touch-sensitive surface used to control a cursor, typically on a laptop.
The built-in pointing device on a laptop.
A standalone touchpad device, not built into a laptop.
A touchpad on a device like a drawing tablet or specialized controller.
The most common and natural term for a laptop touchpad in Japanese.
このノートパソコンのタッチパッドはとても使いやすいです。
This laptop's touchpad is very easy to use.
Also used, especially for Apple products, but タッチパッド is more universal.
MacBookのトラックパッドは感度がいいですね。
The MacBook's trackpad has good sensitivity, doesn't it?
Same word as for laptop touchpads; context clarifies it's external.
デスクトップ用のタッチパッドを買いました。
I bought a touchpad for my desktop.
Used generically for any touch-sensitive pad.
この液タブのタッチパッドでズーム操作ができます。
You can zoom using the touchpad on this pen display.