juror vs foreperson

juror and foreperson both are nouns.

Word	Noun	Adjective	Verb	Adverb
juror	Yes	No	No	No
foreperson	Yes	No	No	No

As nouns, foreperson is a hyponym of juror; that is, foreperson is a word with a more specific, narrower meaning than juror:

juror: someone who serves (or waits to be called to serve) on a jury
foreperson: the presiding member of the jury and the one who speaks on their behalf

Other hyponyms of juror include petit juror, petty juror, juryman, jurywoman.

juror (noun)	foreperson (noun)
someone who serves (or waits to be called to serve) on a jury	the presiding member of the jury and the one who speaks on their behalf