Above and Ahead of

Above adjective - Appearing earlier in the same text.

Ahead of and above are semantically related. in superior to topic. In some cases you can use "Ahead of" instead the word "Above" as a preposition or an adjective, when it comes to topics like senior to.

Ahead of preposition - Earlier than.

Above and ahead of are semantically related. You can use "Above" instead an adjective phrase "Ahead of".