rebel vs rebellion

rebel and rebellion both are nouns.

Word	Noun	Adjective	Verb	Adverb
rebel	Yes	No	Yes	No
rebellion	Yes	No	No	No

rebel (noun)	rebellion (noun)
a person who takes part in an armed rebellion against the constituted authority (especially in the hope of improving conditions)	organized opposition to authority; a conflict in which one faction tries to wrest control from another
someone who exhibits great independence in thought and action	refusal to accept some authority or code or convention

rebel (verb)	rebellion (verb)
take part in a rebellion; renounce a former allegiance
break with established customs