Defiance is a noun.
noun
noun
his defiance gave whatver you asked for
The word rebellion is a noun. A rebellion is a defiance of authority.
part of speech
The part of speech for this particular word is a noun.
The part of speech for "answer" is a noun.
adverb
what part of speech is beneath
The part of speech for "explicit" is an adjective.
The part of speech for "twirl" is a verb.
The part of speech for "unfamiliar" is an adjective.