honour vs regard

honour and regard both are nouns.

Word	Noun	Adjective	Verb	Adverb
honour	Yes	No	Yes	No
regard	Yes	No	Yes	No

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

honour: the state of being honored
regard: the condition of being honored (esteemed or respected or well regarded)

Other hyponyms of honour include glorification, glory, celebrity, fame, renown, esteem, respect, reputation, repute.

honour (noun)	regard (noun)
the quality of being honorable and having a good name	a long fixed look
a woman's virtue or chastity	(usually preceded by `in') a detail or point
a tangible symbol signifying approval or distinction	paying particular notice (as to children or helpless people)
the state of being honored	an attitude of admiration or esteem
	(usually plural) a polite expression of desire for someone's welfare
	a feeling of friendship and esteem
	the condition of being honored (esteemed or respected or well regarded)

honour (verb)	regard (verb)
accept as pay	deem to be
bestow honor or rewards upon	look at attentively
show respect towards	connect closely and often incriminatingly