neologism vs blend

neologism and blend both are nouns.

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

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

Other hyponyms of neologism include portmanteau, portmanteau word.

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

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