tranquilize vs solace

tranquilize is not a noun while solace is a noun.

Word	Noun	Adjective	Verb	Adverb
tranquilize	No	No	Yes	No
solace	Yes	No	Yes	No

As verbs, solace is a hypernym of tranquilize; that is, solace is a word with a broader meaning than tranquilize:

Other hypernyms of tranquilize include comfort, console, soothe.

tranquilize (noun)	solace (noun)
	the act of consoling; giving relief in affliction
	the comfort you feel when consoled in times of disappointment
	comfort in disappointment or misery

tranquilize (verb)	solace (verb)
cause to be calm or quiet as by administering a sedative to	give moral or emotional strength to
make calm or still