sporadic vs spasmodic

sporadic and spasmodic both are adjectives.

Word	Noun	Adjective	Verb	Adverb
sporadic	No	Yes	No	No
spasmodic	No	Yes	No	No

sporadic (adjective)	spasmodic (adjective)
recurring in scattered and irregular or unpredictable instances	occurring in spells and often abruptly
	affected by involuntary jerky muscular contractions; resembling a spasm