Transgression vs Disobey - What's the difference?

As a noun transgression

is a violation of a law, command or duty.

to refuse to obey an order of (somebody).

(wikipedia transgression)

(en noun)

A violation of a law, command or duty

An act that goes beyond generally accepted boundaries

A relative rise in sea level resulting in deposition of marine strata over terrestrial strata

(en verb)

To refuse to obey an order of (somebody).

To refuse to obey.

* obey