High up and High-up

High up adverb - At a great altitude.

High-up and high up are semantically related. in eminent topic. In some cases you can use "High-up" instead the phrase "High up" as a noun or an adjective, when it comes to topics like important, chief, high-ranking.

High-up noun - An important or influential (and often overbearing) person.

High up and high-up are semantically related. You can use "High up" instead the phrase "High-up" as a noun or an adjective.