entitle vs dub

entitle is not a noun while dub is a noun.

Word	Noun	Adjective	Verb	Adverb
entitle	No	No	Yes	No
dub	Yes	No	Yes	No

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

Other hyponyms of entitle include baronetise, baronetize, lord, knight.

entitle (noun)	dub (noun)
	the new sounds added by dubbing

entitle (verb)	dub (verb)
give a title to	give a nickname to
give the right to	provide (movies) with a soundtrack of a foreign language
give a title to someone; make someone a member of the nobility	raise (someone) to knighthood