Ahem and High five

Ahem noun - The utterance of a sound similar to clearing the throat; intended to get attention, express hesitancy, fill a pause, hide embarrassment, warn a friend, etc..

High five and ahem are semantically related. In some cases you can use "High five" instead a noun "Ahem".

Ahem and high five are semantically related. Sometimes you can use "Ahem" instead a noun phrase "High five".