promoter vs booker

promoter and booker both are nouns.

Word	Noun	Adjective	Verb	Adverb
promoter	Yes	No	No	No
booker	Yes	No	No	No

As nouns, booker is a hypernym of promoter; that is, booker is a word with a broader meaning than promoter:

Other hypernyms of promoter include booking agent.

promoter (noun)	booker (noun)
someone who is an active supporter and advocate	someone who engages a person or company for performances
a sponsor who books and stages public entertainments