open vs spread

open and spread both are nouns.

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

As verbs, open and spread are synonyms defined as:

Other synonyms of open include spread out, unfold.

open (noun)	spread (noun)
information that has become public	act of extending over a wider scope or expanse of space or time
a tournament in which both professionals and amateurs may play	decorative cover for a bed
a clear or unobstructed space or expanse of land or water	farm consisting of a large tract of land along with facilities needed to raise livestock (especially cattle)
where the air is unconfined	a haphazard distribution in all directions
	the expansion of a person's girth (especially at middle age)
	a conspicuous disparity or difference as between two figures
	two facing pages of a book or other publication
	process or result of distributing or extending over a wide expanse of space
	a tasty mixture to be spread on bread or crackers or used in preparing other dishes
	a meal that is well prepared and greatly enjoyed

open (adjective)	spread (adjective)
ready or willing to receive favorably	distributed or spread over a considerable extent
affording unobstructed entrance and exit; not shut or closed	fully extended in width
affording free passage or access	prepared or arranged for a meal; especially having food set out
(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)	spread (verb)
make available	cause to become widely known
become available	become widely known and passed on
make the opening move	distribute or disperse widely
cause to open or to become open	spread out or open from a closed or folded state
become open	become distributed or widespread
spread out or open from a closed or folded state	cover by spreading something over
display the contents of a file or start an application as on a computer	distribute over a surface in a layer
afford access to	strew or distribute over an area
start to operate or function or cause to start operating or functioning	move outward
begin or set in action, of meetings, speeches, recitals, etc.	spread across or over
have an opening or passage or outlet