truth vs gospel

truth and gospel both are nouns.

Word	Noun	Adjective	Verb	Adverb
truth	Yes	No	No	No
gospel	Yes	No	No	No

As nouns, gospel is a hyponym of truth; that is, gospel is a word with a more specific, narrower meaning than truth:

Other hyponyms of truth include gospel truth, tautology, truism.

truth (noun)	gospel (noun)
the quality of being near to the true value	a doctrine that is believed to be of great importance
a fact that has been verified	the written body of teachings of a religious group that are generally accepted by that group
a true statement	an unquestionable truth
conformity to reality or actuality	folk music consisting of a genre of a cappella music originating with Black slaves in the United States and featuring call and response; influential on the development of other genres of popular music (especially soul)