Holy Order vs subdeacon

Holy Order and subdeacon both are nouns.

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

As nouns, subdeacon is a hyponym of Holy Order; that is, subdeacon is a word with a more specific, narrower meaning than Holy Order:

Holy Order: (usually plural) the status or rank or office of a Christian clergyman in an ecclesiastical hierarchy
subdeacon: a clergyman an order below deacon; one of the Holy Orders in the unreformed western Christian church and the eastern Catholic Churches but now suppressed in the Roman Catholic Church

Other hyponyms of Holy Order include acolyte, anagnost, deacon, doorkeeper, ostiarius, ostiary, exorcist, lector, reader, priest.

Holy Order (noun)	subdeacon (noun)
(usually plural) the status or rank or office of a Christian clergyman in an ecclesiastical hierarchy	a clergyman an order below deacon; one of the Holy Orders in the unreformed western Christian church and the eastern Catholic Churches but now suppressed in the Roman Catholic Church