telex vs teleprinter

telex and teleprinter both are nouns.

Word	Noun	Adjective	Verb	Adverb
telex	Yes	No	Yes	No
teleprinter	Yes	No	No	No

As nouns, telex and teleprinter are synonyms defined as:

telex and teleprinter: a character printer connected to a telegraph that operates like a typewriter

Other synonyms of telex include teletype machine, teletypewriter, telex machine.

telex (noun)	teleprinter (noun)
a character printer connected to a telegraph that operates like a typewriter	a character printer connected to a telegraph that operates like a typewriter

telex (verb)	teleprinter (verb)
communicate by telex