catchword vs shibboleth

catchword and shibboleth both are nouns.

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

As nouns, catchword and shibboleth are synonyms defined as:

catchword and shibboleth: a favorite saying of a group, organization or individual

Other synonyms of catchword include motto, slogan.

catchword (noun)	shibboleth (noun)
a favorite saying of a group, organization or individual	a manner of speaking that is distinctive of a particular group of people
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	a favorite saying of a group, organization or individual