open vs prize

open and prize both are nouns.

Word	Noun	Adjective	Verb	Adverb
open	Yes	Yes	Yes	No
prize	Yes	Yes	Yes	No

As verbs, prize is a hyponym of open; that is, prize is a word with a more specific, narrower meaning than open:

Other hyponyms of open include unbar, break open, click open, reopen, unlock, unbolt, unseal, uncork, jimmy, lever, prise, pry, breach, gap, lance.

open (noun)	prize (noun)
information that has become public	something given as a token of victory
a tournament in which both professionals and amateurs may play	something given for victory or superiority in a contest or competition or for winning a lottery
a clear or unobstructed space or expanse of land or water	goods or money obtained illegally
where the air is unconfined

open (adjective)	prize (adjective)
ready or willing to receive favorably	of superior grade
affording unobstructed entrance and exit; not shut or closed
affording free passage or access
(set theory) of an interval that contains neither of its endpoints
open and observable; not secret or hidden
used of mouth or eyes
ready for business
not having been filled
(of textures) full of small openings or gaps
openly straightforward and direct without reserve or secretiveness
not requiring union membership
open to or in view of all
possibly accepting or permitting
without undue constriction as from e.g. tenseness or inhibition
having no protecting cover or enclosure
affording free passage or view
with no protection or shield
accessible to all
not sealed or having been unsealed
not brought to a conclusion; subject to further thought
not defended or capable of being defended

open (verb)	prize (verb)
make available	regard highly; think much of
become available	to move or force, especially in an effort to get something open
make the opening move	hold dear
cause to open or to become open
become open
spread out or open from a closed or folded state
display the contents of a file or start an application as on a computer
afford access to
start to operate or function or cause to start operating or functioning
begin or set in action, of meetings, speeches, recitals, etc.
have an opening or passage or outlet