As nouns the difference between reverend and deacon
is that
reverend is a member of the Christian clergy while
deacon is a designated minister of charity in the early Church (see Acts 6:1-6).
As an adjective reverend
is worthy of reverence or respect.
As a verb deacon is
for a choir leader to lead a hymn by speaking one or two lines at a time, which are then sung by the choir.