simplex vs telecommunication

simplex is not a noun while telecommunication is a noun.

Word	Noun	Adjective	Verb	Adverb
simplex	No	Yes	No	No
telecommunication	Yes	No	No	No

simplex (noun)	telecommunication (noun)
	(often plural) the branch of electrical engineering concerned with the technology of electronic communication at a distance
	(often plural) systems used in transmitting messages over a distance electronically

simplex (adjective)	telecommunication (adjective)
having only one part or element
allowing communication in only one direction at a time, or in telegraphy allowing only one message over a line at a time