weapon vs persuasion

weapon and persuasion both are nouns.

Word	Noun	Adjective	Verb	Adverb
weapon	Yes	No	No	No
persuasion	Yes	No	No	No

As nouns, persuasion is a hypernym of weapon; that is, persuasion is a word with a broader meaning than weapon:

weapon: a means of persuading or arguing
persuasion: the act of persuading (or attempting to persuade); communication intended to induce belief or action

Other hypernyms of weapon include suasion.

weapon (noun)	persuasion (noun)
any instrument or instrumentality used in fighting or hunting	a personal belief or judgment that is not founded on proof or certainty
a means of persuading or arguing	the act of persuading (or attempting to persuade); communication intended to induce belief or action