open vs close

open and close both are nouns.

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

open (noun)	close (noun)
information that has become public	the concluding part of any performance
a tournament in which both professionals and amateurs may play	the last section of a communication
a clear or unobstructed space or expanse of land or water	the temporal end; the concluding time
where the air is unconfined

open (adjective)	close (adjective)
ready or willing to receive favorably	at or within a short distance in space or time or having elements near each other
affording unobstructed entrance and exit; not shut or closed	close in relevance or relationship
affording free passage or access	not far distant in time or space or degree or circumstances
(set theory) of an interval that contains neither of its endpoints	marked by fidelity to an original
open and observable; not secret or hidden	rigorously attentive; strict and thorough
used of mouth or eyes	crowded
ready for business	(of a contest or contestants) evenly matched
not having been filled	of textiles
(of textures) full of small openings or gaps	confined to specific persons
openly straightforward and direct without reserve or secretiveness	strictly confined or guarded
not requiring union membership	used of hair or haircuts
open to or in view of all	giving or spending with reluctance
possibly accepting or permitting	fitting closely but comfortably
without undue constriction as from e.g. tenseness or inhibition	inclined to secrecy or reticence about divulging information
having no protecting cover or enclosure	lacking fresh air
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)	close (verb)
make available	finish a game in baseball by protecting a lead
become available	complete a business deal, negotiation, or an agreement
make the opening move	move so that an opening or passage is obstructed; make shut
cause to open or to become open	become closed
become open	bar access to
spread out or open from a closed or folded state	fill or stop up
display the contents of a file or start an application as on a computer	bring together all the elements or parts of
afford access to	unite or bring into contact or bring together the edges of
start to operate or function or cause to start operating or functioning	change one's body stance so that the forward shoulder and foot are closer to the intended point of impact
begin or set in action, of meetings, speeches, recitals, etc.	come together, as if in an embrace
have an opening or passage or outlet	draw near
	cause a window or an application to disappear on a computer desktop
	cease to operate or cause to cease operating
	finish or terminate (meetings, speeches, etc.)
	engage at close quarters
	come to a close
	be priced or listed when trading stops

open (adverb)	close (adverb)
	near in time or place or relationship
	in an attentive manner