* The "ae" digraph is often used in Latin-based words, but in English, it's usually replaced with "e" or "a". For example, "aesthetics" is derived from the Greek "aisthetikos", but in English, we write it as "esthetics".
* There are a few rare exceptions:
* "Archaeology" is an exception where "ae" is kept.
* Some proper nouns like "Æthelred" and "Ælfred" use the "ae" digraph, but these are generally considered archaic and uncommon.
Let me know if you have any other word puzzles!