is a specific kind of: preacher, preacher man, sermoniser, sermonizer.

is a broader term that covers: televangelist.

instances of which are: Billy Graham, Graham, William Franklin Graham | Aimee Semple McPherson, McPherson | Dwight Lyman Moody, Moody | Oral Roberts, Roberts | Billy Sunday, Sunday, William Ashley Sunday.

derivation: revivalism | evangelism | evangelistic.