There is systemic corruption in the government.
Doctors chose a systematic approach to deal with the problem.
Are you jealous or envious?
Jealousy is when you are afraid you might lose something to someone. Like losing your girlfriend to a handsome guy.
Envy is when you admire someone’s ability. Like when you envy your neighbor’s new BMW.
You are green with envy = an idiom meaning to envy someone.
Even native speakers get these 2 verbs confused.