ban vs expel

ban is a noun but expel is not a noun.

Word	Noun	Adjective	Verb	Adverb
ban	Yes	No	Yes	No
expel	No	No	Yes	No

As verbs, expel is a hypernym of ban; that is, expel is a word with a broader meaning than ban:

Other hypernyms of ban include kick out, throw out.

As verbs, expel is a hypernym of ban; that is, expel is a word with a broader meaning than ban:

Other hypernyms of ban include kick out, throw out.

ban (noun)	expel (noun)
a decree that prohibits something
an official prohibition or edict against something
100 bani equal 1 leu in Romania
100 bani equal 1 leu in Moldova
a logarithmic unit which measures information or entropy, based on base 10 logarithms and powers of 10.

ban (verb)	expel (verb)
prohibit especially by legal means or social pressure	eliminate (a substance)
forbid the public distribution of (a movie or a newspaper)	cause to flee
expel from a community or group	force to leave or move out
ban from a place of residence, as for punishment	remove from a position or office