An author, who has been called one of the leading figures of contemporary philosophy, uses expressions such as "ethical theory and moral practice". Can we say "ethical theory and practice" or "moral theory and practice"?
For" ethics", Britannica says: "The discipline concerned with what is morally good and bad, right and wrong. ..." Therefore, "ethics" regards what is "morally good/bad"; why not "ethically good/bad".
I personally prefer the concept ethics, because I do not like those people who are called "moral"; such people are usually partial and bad.