dishonour vs discredit

dishonour and discredit both are nouns.

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

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

Other hyponyms of dishonour include disesteem, disrepute, corruptness, disgrace, ignominy, shame, infamy, opprobrium.

dishonour (noun)	discredit (noun)
lacking honor or integrity	the state of being held in low esteem
a state of shame or disgrace

dishonour (verb)	discredit (verb)
refuse to accept	reject as false; refuse to accept
bring shame or dishonor upon	cause to be distrusted or disbelieved
force (someone) to have sex against their will	damage the reputation of