remove vs expel

remove is a noun but expel is not a noun.

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

As verbs, expel is a hyponym of remove; that is, expel is a word with a more specific, narrower meaning than remove:

remove (noun)	expel (noun)
degree of figurative distance or separation

remove (verb)	expel (verb)
remove something concrete, as by lifting, pushing, or taking off, or remove something abstract	eliminate (a substance)
stay away or leave	cause to flee
get rid of something abstract	force to leave or move out
shift the position or location of, as for business, legal, educational, or military purposes	remove from a position or office
dispose of
remove from a position or an office
kill intentionally and with premeditation
cause to leave