principal vs histrion

principal and histrion both are nouns.

Word	Noun	Adjective	Verb	Adverb
principal	Yes	Yes	No	No
histrion	Yes	No	No	No

As nouns, histrion is a hypernym of principal; that is, histrion is a word with a broader meaning than principal:

Other hypernyms of principal include actor, player, role player, thespian.

principal (noun)	histrion (noun)
the educator who has executive authority for a school	a theatrical performer
an actor who plays a principal role
the major party to a financial transaction at a stock exchange; buys and sells for his own account
(criminal law) any person involved in a criminal offense, regardless of whether the person profits from such involvement
the original amount of a debt on which interest is calculated
capital as contrasted with the income derived from it

principal (adjective)	histrion (adjective)
most important element