place of worship vs house of prayer

place of worship and house of prayer both are nouns.

Word	Noun	Adjective	Verb	Adverb
place of worship	Yes	No	No	No
house of prayer	Yes	No	No	No

As nouns, place of worship and house of prayer are synonyms defined as:

place of worship and house of prayer: any building where congregations gather for prayer

Other synonyms of place of worship include house of God, house of worship.

place of worship (noun)	house of prayer (noun)
any building where congregations gather for prayer	any building where congregations gather for prayer