recognition vs memorial

recognition and memorial both are nouns.

Word	Noun	Adjective	Verb	Adverb
recognition	Yes	No	No	No
memorial	Yes	No	No	No

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

Other hyponyms of recognition include commemoration, remembrance, ovation, standing ovation, salutation, salute.

recognition (noun)	memorial (noun)
designation by the chair granting a person the right to speak in a deliberative body	a structure erected to commemorate persons or events
the process of recognizing something or someone by remembering	a recognition of meritorious service
an acceptance (as of a claim) as true and valid	a written statement of facts submitted in conjunction with a petition to an authority
coming to understand something clearly and distinctly
approval
the explicit and formal acknowledgement of a government or of the national independence of a country
(biology) the ability of one molecule to attach to another molecule that has a complementary shape
the state or quality of being recognized or acknowledged