psalm vs religious writing

psalm and religious writing both are nouns.

Word	Noun	Adjective	Verb	Adverb
psalm	Yes	No	Yes	No
religious writing	Yes	No	No	No

As nouns, religious writing is a hypernym of psalm; that is, religious writing is a word with a broader meaning than psalm:

Other hypernyms of psalm include religious text, sacred text, sacred writing.

psalm (noun)	religious writing (noun)
any sacred song used to praise the deity	writing that is venerated for the worship of a deity

psalm (verb)	religious writing (verb)
sing or celebrate in psalms