Emcee and Symposiarch

Emcee noun - A person who acts as host at formal occasions (makes an introductory speech and introduces other speakers).

Symposiarch and emcee are semantically related. In some cases you can replace term "Symposiarch" with "Emcee", this nouns are similar.

Symposiarch noun - The person who proposes toasts and introduces speakers at a banquet.

Emcee and symposiarch are semantically related. Sometimes you can use "Emcee" instead a noun "Symposiarch".