discredit vs doubt

discredit and doubt both are nouns.

Word	Noun	Adjective	Verb	Adverb
discredit	Yes	No	Yes	No
doubt	Yes	No	Yes	No

As verbs, doubt is a hyponym of discredit; that is, doubt is a word with a more specific, narrower meaning than discredit:

Other hyponyms of discredit include distrust, mistrust, suspect.

discredit (noun)	doubt (noun)
the state of being held in low esteem	uncertainty about the truth or factuality or existence of something
	the state of being unsure of something

discredit (verb)	doubt (verb)
reject as false; refuse to accept	consider unlikely
cause to be distrusted or disbelieved	lack confidence in
damage the reputation of