mantra vs religious text

mantra and religious text both are nouns.

Word	Noun	Adjective	Verb	Adverb
mantra	Yes	No	No	No
religious text	Yes	No	No	No

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

mantra: (Sanskrit) literally a `sacred utterance' in Vedism; one of a collection of orally transmitted poetic hymns
religious text: writing that is venerated for the worship of a deity

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

mantra (noun)	religious text (noun)
(Sanskrit) literally a `sacred utterance' in Vedism; one of a collection of orally transmitted poetic hymns	writing that is venerated for the worship of a deity
a commonly repeated word or phrase