blend vs neologism

blend and neologism both are nouns.

Word	Noun	Adjective	Verb	Adverb
blend	Yes	No	Yes	No
neologism	Yes	No	No	No

As nouns, neologism is a hypernym of blend; that is, neologism is a word with a broader meaning than blend:

Other hypernyms of blend include coinage, neology.

blend (noun)	neologism (noun)
the act of blending components together thoroughly	the act of inventing a word or phrase
a new word formed by joining two others and combining their meanings	a newly invented word or phrase
an occurrence of thorough mixing

blend (verb)	neologism (verb)
mix together different elements
combine into one
blend or harmonize