noun
Refers to the person or organization hosting a party, summit, TV show, or similar event.
彼はパーティーのホストを務めた。
He acted as the host of the party.
サミットのホスト国は日本です。
The host country of the summit is Japan.
noun
male host (at a host club)
Specifically refers to a male employee who entertains female customers at a host club (ホストクラブ).
彼は新宿でホストとして働いている。
He works as a host in Shinjuku.