deacon vs Holy Order

deacon and Holy Order both are nouns.

Word	Noun	Adjective	Verb	Adverb
deacon	Yes	No	No	No
Holy Order	Yes	No	No	No

As nouns, Holy Order is a hypernym of deacon; that is, Holy Order is a word with a broader meaning than deacon:

deacon: a cleric ranking just below a priest in Christian churches; one of the Holy Orders
Holy Order: (usually plural) the status or rank or office of a Christian clergyman in an ecclesiastical hierarchy

Other hypernyms of deacon include clergyman, man of the cloth, reverend, Order.

deacon (noun)	Holy Order (noun)
a cleric ranking just below a priest in Christian churches; one of the Holy Orders	(usually plural) the status or rank or office of a Christian clergyman in an ecclesiastical hierarchy
a Protestant layman who assists the minister