mantra vs catchword

mantra and catchword both are nouns.

Word	Noun	Adjective	Verb	Adverb
mantra	Yes	No	No	No
catchword	Yes	No	No	No

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

Other hypernyms of mantra include motto, shibboleth, slogan.

mantra (noun)	catchword (noun)
(Sanskrit) literally a `sacred utterance' in Vedism; one of a collection of orally transmitted poetic hymns	a favorite saying of a group, organization or individual
a commonly repeated word or phrase	a word printed at the top of the page of a dictionary or other reference book to indicate the first or last item on that page