typewriter vs character printer

typewriter and character printer both are nouns.

Word	Noun	Adjective	Verb	Adverb
typewriter	Yes	No	No	No
character printer	Yes	No	No	No

As nouns, character printer is a hypernym of typewriter; that is, character printer is a word with a broader meaning than typewriter:

typewriter: hand-operated character printer for printing written messages one character at a time
character printer: a printer that prints a single character at a time

Other hypernyms of typewriter include character-at-a-time printer, serial printer.

typewriter (noun)	character printer (noun)
hand-operated character printer for printing written messages one character at a time	a printer that prints a single character at a time