zed vs izzard

zed and izzard both are nouns.

Word	Noun	Adjective	Verb	Adverb
zed	Yes	No	No	No
izzard	Yes	No	No	No

As nouns, zed and izzard are synonyms defined as:

Other synonyms of zed include ezed, Z, z, zee.

zed (noun)	izzard (noun)
the 26th letter of the Roman alphabet	the 26th letter of the Roman alphabet