symbol vs honour

symbol and honour both are nouns.

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

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

symbol: an arbitrary sign (written or printed) that has acquired a conventional significance
honour: a tangible symbol signifying approval or distinction

symbol (noun)	honour (noun)
something visible that by association or convention represents something else that is invisible	the quality of being honorable and having a good name
an arbitrary sign (written or printed) that has acquired a conventional significance	a woman's virtue or chastity
	a tangible symbol signifying approval or distinction
	the state of being honored