As nouns the difference between ergosine and ergoline

is that ergosine is any of a class of ergoloid-like chemicals produced by claviceps purpurea while ergoline is (chemistry) a tetracyclic heterocycle whose structural skeleton is contained in a diverse range of alkaloids, including some psychedelic drugs, and whose derivatives are used clinically for vasoconstriction and in the treatment of migraine and parkinson's disease.