Difference between Doyen and Dean

What is the difference between Doyen and Dean?

Doyen as a noun is a commander in charge of ten men. while Dean as a noun is a senior official in a college or university, who may be in charge of a division or faculty (for example, the dean of science) or have some other advisory or disciplinary function (for example, the dean of students)

We hope you now know whether to use Doyen or Dean in your sentence.