dedicate vs rededicate

dedicate and rededicate both are verbs.

Word	Noun	Adjective	Verb	Adverb
dedicate	No	No	Yes	No
rededicate	No	No	Yes	No

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

Other hyponyms of dedicate include consecrate, vow, apply.

dedicate (verb)	rededicate (verb)
set apart to sacred uses with solemn rites, of a church	dedicate anew
give entirely to a specific person, activity, or cause
inscribe or address by way of compliment
open to public use, as of a highway, park, or building