version vs subtitle

version and subtitle both are nouns.

Word	Noun	Adjective	Verb	Adverb
version	Yes	No	No	No
subtitle	Yes	No	Yes	No

As nouns, subtitle is a hyponym of version; that is, subtitle is a word with a more specific, narrower meaning than version:

version: a written communication in a second language having the same meaning as the written communication in a first language
subtitle: translation of foreign dialogue of a movie or TV program; usually displayed at the bottom of the screen

Other hyponyms of version include mistranslation, crib, pony, trot, retroversion, caption, supertitle, surtitle.

version (noun)	subtitle (noun)
manual turning of a fetus in the uterus (usually to aid delivery)	secondary or explanatory title
a mental representation of the meaning or significance of something	translation of foreign dialogue of a movie or TV program; usually displayed at the bottom of the screen
something a little different from others of the same type
a written communication in a second language having the same meaning as the written communication in a first language
an interpretation of a matter from a particular viewpoint
a written work (as a novel) that has been recast in a new form

version (verb)	subtitle (verb)
	supply (a movie) with subtitles