antispasmodic agent vs spasmolytic

antispasmodic agent and spasmolytic both are nouns.

Word	Noun	Adjective	Verb	Adverb
antispasmodic agent	Yes	No	No	No
spasmolytic	Yes	No	No	No

As nouns, antispasmodic agent and spasmolytic are synonyms defined as:

antispasmodic agent and spasmolytic: a drug used to relieve or prevent spasms (especially of the smooth muscles)

Other synonyms of antispasmodic agent include antispasmodic.

antispasmodic agent (noun)	spasmolytic (noun)
a drug used to relieve or prevent spasms (especially of the smooth muscles)	a drug used to relieve or prevent spasms (especially of the smooth muscles)