house of worship vs place of worship

house of worship and place of worship both are nouns.

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

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

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

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

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