meetinghouse vs house of God

meetinghouse and house of God both are nouns.

Word	Noun	Adjective	Verb	Adverb
meetinghouse	Yes	No	No	No
house of God	Yes	No	No	No

As nouns, house of God is a hypernym of meetinghouse; that is, house of God is a word with a broader meaning than meetinghouse:

meetinghouse: a building for religious assembly (especially Nonconformists, e.g., Quakers)
house of God: any building where congregations gather for prayer

Other hypernyms of meetinghouse include house of prayer, house of worship, place of worship.

meetinghouse (noun)	house of God (noun)
a building for religious assembly (especially Nonconformists, e.g., Quakers)	any building where congregations gather for prayer