open vs launch

open and launch both are nouns.

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

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

open: start to operate or function or cause to start operating or functioning
launch: set up or found

Other hyponyms of open include establish, found, set up.

open (noun)	launch (noun)
information that has become public	the act of propelling with force
a tournament in which both professionals and amateurs may play	a motorboat with an open deck or a half deck
a clear or unobstructed space or expanse of land or water
where the air is unconfined

open (adjective)	launch (adjective)
ready or willing to receive favorably
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)	launch (verb)
make available	begin with vigor
become available	propel with force
make the opening move	launch for the first time; launch on a maiden voyage
cause to open or to become open	get going; give impetus to
become open	smoothen the surface of
spread out or open from a closed or folded state	set up or found
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