drum roll vs paradiddle

drum roll and paradiddle both are nouns.

Word	Noun	Adjective	Verb	Adverb
drum roll	Yes	No	No	No
paradiddle	Yes	No	No	No

As nouns, drum roll and paradiddle are synonyms defined as:

drum roll and paradiddle: the sound of a drum (especially a snare drum) beaten rapidly and continuously

Other synonyms of drum roll include roll.

drum roll (noun)	paradiddle (noun)
the sound of a drum (especially a snare drum) beaten rapidly and continuously	the sound of a drum (especially a snare drum) beaten rapidly and continuously