Overhead and Upper

Overhead adjective - Located or originating from above.

Upper is a synonym for overhead in high topic. In some cases you can use "Upper" instead the word "Overhead" as an adjective or a noun, when it comes to topics like above, up above. popular alternative

Upper adjective - Higher in place or position.

Overhead is a synonym for upper in above topic. You can use "Overhead" instead the word "Upper" as an adjective or a noun, if it concerns topics such as high. popular alternative